1989 FORD SIERRA check engine

Engine
Oil filter type:
SOHC and DOHC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Champion C102
CVH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Champion C104
Valve clearances (cold):
SOHC:
Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.20 ± 0.03 mm (0.008 ± 0.001 in)
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.25 ± 0.03 mm (0.010 ± 0.001 in)
DOHC and CVH:
Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Not applicable (hydraulic cam followers)
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Not applicable (hydraulic cam followers)
Chapter 1
Routine maintenance and servicing
Air cleaner filter element renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Air cleaner inlet air temperature control check . . . . . . . . . . . . . . . . . .36
Air conditioner refrigerant charge check . . . . . . . . . . . . . . . . . . . . . .26
Automatic transmission brake band adjustment . . . . . . . . . . . . . . . .40
Automatic transmission fluid level check . . . . . . . . . . . . . . . . . . . . . .17
Automatic transmission selector lubrication . . . . . . . . . . . . . . . . . . .28
Auxiliary drivebelt check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Battery electrolyte level check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Battery terminal check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Brake fluid renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
Brake system seal and hose renewal . . . . . . . . . . . . . . . . . . . . . . . . .43
Brake pipe and hose check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Camshaft drivebelt renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
Crankcase ventilation system check . . . . . . . . . . . . . . . . . . . . . . . . .35
Crankcase ventilation vent valve renewal . . . . . . . . . . . . . . . . . . . . . .42
Driveshaft check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Electrical system check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Engine coolant renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
Engine idle speed check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Engine oil and filter renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Engine valve clearance check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Exhaust system check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Final drive oil level check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27Fluid leak check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Fluid level checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Ford Sierra maintenance schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Front and rear brake pad/shoe check . . . . . . . . . . . . . . . . . . . . . . . . .9
Fuel filter renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
Handbrake check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Hinge and lock check and lubrication . . . . . . . . . . . . . . . . . . . . . . . .19
Idle speed linkage clean . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Ignition system component check . . . . . . . . . . . . . . . . . . . . . . . . . . .39
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Manual gearbox oil level check . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Mixture adjustment check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Oil filler cap check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Pulse air filter element renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Radiator matrix and air conditioner condenser clean . . . . . . . . . . . . .25
Road test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Roadwheel security check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Seat belt check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Spark plug renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Steering and suspension security check . . . . . . . . . . . . . . . . . . . . . .29
Tyre checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Underbody inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Wiper blade check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
1•1
Easy,suitable for
novice with little
experienceFairly easy,suitable
for beginner with
some experienceFairly difficult,
suitable for competent
DIY mechanic
Difficult,suitable for
experienced DIY
mechanicVery difficult,
suitable for expert
DIY or professional
Degrees of difficulty
Specifications Contents
1

1•4Maintenance schedule
Every 250 miles (400 km) or weekly
m mCheck the engine oil level (Section 3)
m mCheck the engine coolant level (Section 3)
m mCheck the brake fluid level (Section 3)
m mCheck the power steering fluid level (Section 3)
m mCheck the screen washer fluid level (Section 3)
m mVisually examine the tyres for tread depth, and wear
or damage (Section 4)
m mCheck and if necessary adjust the tyre pressures
(Section 4)
m mCheck and if necessary top-up the battery electrolyte
level - where applicable (Section 6)
m mCheck the operation of the horn, all lights, and the
wipers and washers (Sections 5 and 7)
Every 6000 miles (10 000 km) or
6 months - whichever comes sooner
m mRenew engine oil and filter (Section 8)
m mCheck brake pads or shoes for wear (front and rear)
(Section 9)
m mCheck operation of brake fluid level warning indicator
(Section 9)
m mInspect engine bay and underside of vehicle for fluid
leaks or other signs of damage (Section 10)
m mCheck function and condition of seat belts
(Section 11)
m mCheck condition and security of exhaust system
(Section 12)
m mCheck tightness of wheel nuts (Section 13)
m mClean oil filler cap (Section 14)
m mCheck idle speed (where applicable) (Section 15)
m mCheck mixture adjustment (where applicable)
(Section 16)
Every 12 000 miles (20 000 km) or
12 months - whichever comes sooner
m mCheck automatic transmission fluid level (engine hot)
(Section 17)
m mCheck manual gearbox oil level (Section 18)
m mCheck operation of latches, check straps and locks;
lubricate if necessary (Section 19)
m mRenew spark plugs (Section 20)
m mCheck condition and tension of auxiliary drivebelt(s);
adjust or renew as necessary (Section 21)
m mCheck tightness of battery terminals, clean and
neutralise corrosion if necessary (Section 22)
m mCheck engine valve clearances - SOHC only
(Section 23)
m mCheck handbrake mechanism (Section 24)
Every 24 000 miles (40 000 km) or
2 years - whichever comes sooner
m mCheck air cleaner inlet air temperature control
operation (carburettor models) (Section 36)
m mRenew pulse air filter element (1.6 litre CVH)
(Section 37)
m mRenew air cleaner element (Section 38)
m mClean and inspect distributor cap and HT leads
(Section 39)
m mCheck automatic transmission brake band
adjustment (Section 40)
m mRenew fuel filter (fuel-injection models only)
(Section 41)
m mRenew crankcase ventilation vent valve (SOHC and
DOHC) (Section 42)
m mClean radiator matrix and air conditioning condenser
fins (where applicable) (Section 25)
m mCheck air conditioning refrigerant charge (where
applicable) (Section 26)
m mCheck final drive oil level (Section 27)
m mLubricate automatic transmission selector/kickdown
linkage (Section 28)
m mCheck security and condition of steering and
suspension components, gaiters and boots
(Section 29)
m mCheck condition and security of driveshaft joints and
gaiters (Section 30)
m mInspect underbody and panels for corrosion or other
damage (Section 31)
m mInspect brake pipes and hoses (Section 32)
m mClean idle speed control linkage at throttle (where
applicable) (Section 33)
m mRoad test and check operation of ABS (Section 34)
m mCheck crankcase ventilation system (Section 35)
Every 36 000 miles (60 000 km) or
3 years - whichever comes sooner
m mRenew brake hydraulic system seals and hoses if
necessary (Section 43)
m mRenew brake hydraulic fluid (Section 44)
m mRenew camshaft drivebelt (optional on SOHC
models - compulsory on CVH) (Section 45)
m mRenew coolant (Section 46)
Every 12 000 miles (20 000 km) or
12 months - whichever comes sooner
(continued)

General information
This Chapter is designed to help the home
mechanic maintain his/her vehicle for safety,
economy, long life and peak performance.
The Chapter contains a master
maintenance schedule, followed by Sections
dealing specifically with each task in the
schedule. Visual checks, adjustments,
component renewal and other helpful items
are included. Refer to the accompanying
illustrations of the engine compartment and
the underside of the vehicle for the locations
of the various components.
Servicing your vehicle in accordance with
the mileage/time maintenance schedule and
the following Sections will provide a planned
maintenance programme, which should result
in a long and reliable service life. This is a
comprehensive plan, so maintaining some
items but not others at the specified service
intervals, will not produce the same results.
As you service your vehicle, you will discover
that many of the procedures can - and should -
be grouped together, because of the particular
procedure being performed, or because of the
close proximity of two otherwise-unrelated
components to one another. For example, if
the vehicle is raised for any reason, the exhaust
can be inspected at the same time as thesuspension and steering components.
The first step in this maintenance
programme is to prepare yourself before the
actual work begins. Read through all the
Sections relevant to the work to be carried
out, then make a list and gather together all
the parts and tools required. If a problem is
encountered, seek advice from a parts
specialist, or a dealer service department.
Intensive maintenance
If, from the time the vehicle is new, the
routine maintenance schedule is followed
closely, and frequent checks are made of fluid
levels and high-wear items, as suggested
throughout this manual, the engine will be
kept in relatively good running condition, and
the need for additional work will be minimised.
It is possible that there will be times when
the engine is running poorly due to the lack of
regular maintenance. This is even more likely
if a used vehicle, which has not received
regular and frequent maintenance checks, is
purchased. In such cases, additional work
may need to be carried out, outside of the
regular maintenance intervals.
If engine wear is suspected, a compression
test will provide valuable information
regarding the overall performance of the main
internal components. Such a test can be used
as a basis to decide on the extent of the work
to be carried out. If, for example, a
compression test indicates serious internal
engine wear, conventional maintenance as
described in this Chapter will not greatlyimprove the performance of the engine, and
may prove a waste of time and money, unless
extensive overhaul work is carried out first.
The following series of operations are those
most often required to improve the
performance of a generally poor-running
engine:
Primary operations
a)Clean, inspect and test the battery
b)Check all the engine-related fluids
c)Check the condition and tension of the
auxiliary drivebelt
d)Renew the spark plugs
e)Inspect the distributor cap and HT leads -
as applicable
f)Check the condition of the air cleaner
filter element, and renew if necessary
g)Renew the fuel filter
h)Check the condition of all hoses, and
check for fluid leaks
i)Check the idle speed and mixture settings
- as applicable
If the above operations do not prove fully
effective, carry out the following secondary
operations:
Secondary operations
a)Check the charging system
b)Check the ignition system
c)Check the fuel system
d)Renew the distributor cap and rotor arm -
as applicable
f)Renew the ignition HT leads - as
applicable
2Introduction
See “Weekly checks”.
See “Weekly checks”.See “Weekly checks”.
See “Weekly checks”.See “Weekly checks”.
7Wiper blade check
6Battery electrolyte level check
5Electrical system check
4Tyre checks
3Fluid level checks
1Frequent oil and filter changes are the most
important preventative maintenance
procedures which can be undertaken by the
DIY owner. As engine oil ages, it becomes
diluted and contaminated, which leads to
premature engine wear.
2Before starting this procedure, gather
together all the necessary tools and materials.
Also make sure that you have plenty of clean
rags and newspapers handy, to mop up any
spills. Ideally, the engine oil should be warm,
as it will drain better, and more built-upsludge will be removed with it. Take care,
however, not to touch the exhaust or any
other hot parts of the engine when working
under the vehicle. To avoid any possibility of
scalding, and to protect yourself from
possible skin irritants and other harmful
contaminants in used engine oils, it is
advisable to wear gloves when carrying out
this work. Access to the underside of the
vehicle will be greatly improved if it can be
raised on a lift, driven onto ramps, or jacked
up and supported on axle stands (see
“Jacking and vehicle support”). Whichever
method is chosen, make sure that the vehicle
remains level, or if it is at an angle, so that the
drain plug is at the lowest point (see
illustration).
8Engine oil and filter renewal
Maintenance procedures 1•9
1
8.2 Sump drain plug location
Every 250 miles (400 km) or weekly
Every 6000 miles (10 000 km) or 6 months

3Slacken the drain plug about half a turn.
Position the draining container under the drain
plug, then remove the plug completely. If
possible, try to keep the plug pressed into the
sump while unscrewing it by hand the last
couple of turns. As the plug releases from the
threads, move it away sharply so the stream
of oil issuing from the sump runs into the
container, not up your sleeve! Recover the
sealing washer from the drain plug.
4Allow some time for the old oil to drain,
noting that it may be necessary to reposition
the container as the oil flow slows to a trickle.
5After all the oil has drained, wipe off the
drain plug with a clean rag. Check the sealing
washer for condition, and renew it if
necessary. Clean the area around the drain
plug opening, and refit the plug. Tighten the
plug to the specified torque.
6Move the container into position under the
oil filter.
7Using an oil filter removal tool if necessary,
slacken the filter initially, then unscrew it by
hand the rest of the way (see illustration).
Empty the oil from the old filter into the
container, and discard the filter.
8Use a clean rag to remove all oil, dirt and
sludge from the filter sealing area on the
engine. Check the old filter to make sure that
the rubber sealing ring hasn’t stuck to the
engine. If it has, carefully remove it.
9Apply a light coating of clean engine oil to
the sealing ring on the new filter, then screw it
into position on the engine. Tighten the filter
firmly by hand only - do notuse any tools.
Wipe clean the filter and sump drain plug.10Remove the old oil and all tools from
under the car, then lower the car to the
ground (if applicable).
11Remove the oil filler cap and withdraw the
dipstick. Fill the engine, using the correct
grade and type of oil (see “Lubricants and
fluids”). An oil can spout or funnel may help to
reduce spillage. Pour in half the specified
quantity of oil first, then wait a few minutes for
the oil to fall to the sump. Continue adding oil
a small quantity at a time until the level is up to
the lower mark on the dipstick. Finally, bring
the level up to the upper mark on the dipstick.
Insert the dipstick, and refit the filler cap.
12Start the engine and run it for a few
minutes; check for leaks around the oil filter
seal and the sump drain plug. Note that there
may be a delay of a few seconds before the oil
pressure warning light goes out when the
engine is first started, as the oil circulates
through the engine oil galleries and the new oil
filter, before the pressure builds up.
13Switch off the engine, and wait a few
minutes for the oil to settle in the sump once
more. With the new oil circulated and the filter
completely full, recheck the level on the
dipstick, and add more oil as necessary.
14Dispose of the used engine oil safely, with
reference to “General repair procedures”in
the Reference section of this manual.
1Firmly apply the handbrake, then jack up
the front and rear of the car and support it
securely on axle stands (see “Jacking and
vehicle support”).
2For a quick check, the front brake disc pads
can be inspected without removing the front
wheels by inserting a mirror between each
caliper and roadwheel(see illustration).If any
one pad is worn down to the minimum
specified thickness, all four pads (on both
front wheels) must be renewed.
3It is necessary to remove the rear wheels in
order to inspect the rear disc pads. The pads
can be viewed through the top of the caliper
after removing the blanking spring clip(see
illustration).If any one pad is worn down to
the minimum specified, all four pads (on both
rear wheels) must be renewed.4For a comprehensive check, the brake disc
pads should be removed and cleaned. The
operation of the caliper can then also be
checked, and the condition of the brake discs
can be fully examined on both sides. Refer to
Chapter 10 for further information.
5On rear drum brake models, the brake shoe
friction material can be inspected for wear
without removing the roadwheels. Working
beneath the vehicle, prise the plug from the
brake backplate, and using an inspection
lamp or torch, check that the friction material
thickness is not less than the minimum given
in the Specifications(see illustration).If any
one of the shoes has worn below the
specified limit, the shoes must be renewed as
an axle set (4 shoes).
6At the same interval, check the function of the
brake fluid level warning light. Chock the wheels,
release the handbrake and switch on the
ignition. Unscrew and raise the brake fluid
reservoir cap whilst an assistant observes the
warning light: it should come on as the level
sensor is withdrawn from the fluid. Refit the cap.
7On completion, refit the wheels and lower
the car to the ground.
1Visually inspect the engine joint faces,
gaskets and seals for any signs of water or oil
leaks. Pay particular attention to the areas
around the rocker cover, cylinder head, oil
filter and sump joint faces. Bear in mind that
over a period of time some very slight
seepage from these areas is to be expected
but what you are really looking for is any
indication of a serious leak. Should a leak be
found, renew the offending gasket or oil seal
by referring to the appropriate Chapter(s) in
this manual.
2Similarly, check the transmission for oil
leaks, and investigate and rectify and
problems found.
3Check the security and condition of all the
engine related pipes and hoses. Ensure that
all cable-ties or securing clips are in place and
in good condition. Clips which are broken or
missing can lead to chafing of the hoses,
pipes or wiring which could cause more
serious problems in the future.
10Fluid leak check
9Front and rear brake pad/shoe
check
1•10Every 6000 miles or 6 months
8.7 Unscrewing the oil filter
9.3 Disc pads viewed through caliper
inspection hole (roadwheel removed)9.5 Brake shoe inspection hole plug
(arrowed)9.2 Using a mirror to inspect the disc pad
friction material for wear
A Brake disc B Brake disc pads

4Carefully check the condition of all coolant,
fuel, power steering and brake hoses. Renew
any hose which is cracked, swollen or
deteriorated. Cracks will show up better if the
hose is squeezed. Pay close attention to the
hose clips that secure the hoses to the system
components. Hose clips can pinch and
puncture hoses, resulting in leaks. If wire type
hose clips are used, it may be a good idea to
replace them with screw-type clips.
5With the vehicle raised, inspect the fuel
tank and filler neck for punctures, cracks and
other damage. The connection between the
filler neck and tank is especially critical.
Sometimes a rubber filler neck or connecting
hose will leak due to loose retaining clamps or
deteriorated rubber.
6Similarly, inspect all brake hoses and metal
pipes. If any damage or deterioration is
discovered, do not drive the vehicle until the
necessary repair work has been carried out.
Renew any damaged sections of hose or pipe.
7Carefully check all rubber hoses and metal
fuel lines leading away from the petrol tank.
Check for loose connections, deteriorated
hoses, crimped lines and other damage. Pay
particular attention to the vent pipes and
hoses which often loop up around the filler
neck and can become blocked or crimped.
Follow the lines to the front of the vehicle
carefully inspecting them all the way. Renew
damaged sections as necessary.
8From within the engine compartment,
check the security of all fuel hose attachments
and pipe unions, and inspect the fuel hoses
and vacuum hoses for kinks, chafing and
deterioration.
9Where applicable, check the condition of
the oil cooler hoses and pipes.
10Check the condition of all exposed wiring
harnesses.
1Periodically check the belts for fraying or
other damage. If evident, renew the belt.
2If the belts become dirty, wipe them with a
damp cloth using a little detergent only.
3Check the tightness of the anchor bolts and
if they are ever disconnected, make quite sure
that the original sequence of fitting of
washers, bushes and anchor plates is
retained.
With the vehicle raised on a hoist or
supported on axle stands, check the exhaust
system for signs of leaks, corrosion or
damage and check the rubber mountings for
condition and security. Where damage or
corrosion are evident, renew the system
complete or in sections, as applicable, using
the information given in Chapter 4.With the wheels on the ground, slacken each
wheel nut by a quarter turn, then retighten it
immediately to the specified torque.
Remove and clean the oil filler cap of any
sludge build-up using paraffin.
Inspect the vent hose for blockage or
damage. A blocked hose can cause a build-
up of crankcase pressure, which in turn can
cause oil leaks.
Ford VV carburettor
1Ensure that the air cleaner is correctly fitted,
and that all vacuum hoses and pipes are
securely connected and free from restrictions,
then run the engine until it is at normal
operating temperature.
2Stop the engine, and connect a tachometer
and an exhaust gas analyser in accordance
with the manufacturer’s instructions.
3Start the engine and run it at 3000 rpm for
30 seconds, ensuring that all electrical loads
are switched off (headlamps, heater blower
etc), then allow the engine to idle and check
the idle speed and CO content. Note that the
CO reading will initially rise, then fall and finally
stabilise after between 5 and 25 seconds.4If necessary, adjust the idle speed screw to
give the specified idle speed (see
illustration).
5Checking and adjustment should be
completed within 30 seconds of the meter
readings stabilising. If this has not been
possible, repeat paragraphs 3 and 4, ignoring
the reference to starting the engine.
Weber 2V carburettor
Models without stepper motor
6Proceed as described for the Ford VV
carburettor but note the following:
7It is permissible to loosen the air cleaner
securing screws to allow easier access to the
carburettor adjustment screws but ensure
that all vacuum hoses and pipes are securely
connected. For adjustment screw location
(see illustrations).
Models with stepper motor (ESC II
system)
8The idle speed is controlled by the ESC II
module via the stepper motor. The only idle
speed adjustment possible is provided by the
“idle speed adjustment” wire, which can be
earthed to raise the idle speed by 75 rpm. No
other method of idle speed adjustment should
be attempted. If the idle speed is incorrect,
the problem should be referred to a Ford
dealer, as the problem probably lies in the
ESC II module for which special diagnostic
equipment is required.
15Engine idle speed check
14Oil filler cap check
13Roadwheel security check
12Exhaust system check
11Seat belt check
Every 6000 miles or 6 months 1•11
1
15.7b Weber 2V carburettor adjustment
screw locations - 1.6 litre models
A Idle mixture screwB Idle speed screw
15.7a Weber 2V carburettor adjustment
screw locations - 2.0 litre models up to 1985
A Idle speed screwB Idle mixture screw
15.4 Ford VV carburettor adjustment screw
locations
A Idle speed screwB Idle mixture screw
Caution: Refer to the
precautions in Section 1,
Chapter 4, Part A or B (as
applicable), before proceeding.
Before carrying out any carburettor
adjustments, ensure that the ignition
timing and spark plug gaps are set as
specified. To carry out the adjustments an
accurate tachometer and an exhaust gas
analyser (CO meter) will be required.

Pierburg 2V carburettor
9Proceed as described for the Ford VV
carburettor. For adjustment screw location
(see illustration).
Weber 2V TLD carburettor
10Proceed as described for the Ford VV
carburettor, noting the following points:
11Ensure that the vacuum pipe and the
camshaft cover breather hose are securely
connected to the air cleaner and are free from
restrictions.
12When warming-up the engine, run the
engine until the cooling fan cuts in.
13For adjustment screw location (see
illustration).
Fuel injection
2.0 litre SOHC models
14Idle speed is controlled by the EEC IV
module and the only means of adjustment
provided is by the yellow “idle speed
adjustment” wire (Chapter 5, Section 17) which
allows the idle speed to be raised by 75 rpm.
2.0 litre DOHC models
15Idle speed is controlled by the EEC IV
module, and manual adjustment is not
possible.
16The “base” idle speed can be adjusted,
but only by a Ford dealer, using special
equipment.
Ford VV carburettor
1Ensure that the air cleaner is correctly fitted
and that all vacuum hoses and pipes are
securely connected and free from restrictions,
then run the engine until it is at normal
operating temperature.
2Stop the engine, and connect a tachometer
and an exhaust gas analyser in accordance
with the manufacturer’s instructions.
3Start the engine and run it at 3000 rpm for 30
seconds, ensuring that all electrical loads are
switched off (headlamps, heater blower etc),
then allow the engine to idle and check the idle
speed and CO content. Note that the CO
reading will initially rise, then fall and finally
stabilise after between 5 and 25 seconds.
4If the reading noted in paragraph 3 is not as
specified, proceed as follows.
5Using a thin screwdriver, remove the
tamperproof seal from the mixture screw.6Run the engine at 3000 rpm for 30 seconds,
then allow the engine to idle, and using a
small screwdriver or a 4.0 mm Allen key, as
applicable, adjust the mixture screw to give
the specified CO content.
7Checking and adjustment should be
completed within 30 seconds of the meter
readings stabilising. If this has not been
possible, then repeat paragraph 6.
8If necessary adjust the idle speed, then
recheck the CO content.
9On completion of the adjustments, stop the
engine and disconnect the tachometer and
exhaust gas analyser. Fit a new tamperproof
seal to the mixture screw.
Weber 2V carburettor
Models without stepper motor
10Proceed as described for the Ford VV
carburettor but note the following:
11To remove the mixture screw tamperproof
seal, it will be necessary to drill the seal in
order to prise it from the mixture screw
housing. Alternatively a self-tapping screw
can be used to draw out the seal. If the
tamperproof seal is to be renewed, ensure
that a blue-coloured replacement seal is
fitted.
12It is permissible to loosen the air cleaner
securing screws to allow easier access to the
carburettor adjustment screws, but ensure
that all vacuum hoses and pipes are securely
connected.
Models with stepper motor (ESC II
system)
13If necessary, the mixture can be adjusted
as described for the Ford VV carburettor with
reference to paragraphs 11 and 12 of this
Section. Do not attempt to adjust the idle
speed on completion of mixture adjustment.
For adjustment screw location (see
illustration).
Pierburg 2V carburettor
14Proceed as described for the Ford VV
carburettor.
Weber 2V TLD carburettor
15Proceed as described for the Ford VV
carburettor, noting the following points:
16Ensure that the vacuum pipe and the
camshaft cover breather hose are securely
connected to the air cleaner and are free from
restrictions.
17When warming-up the engine, run the
engine until the cooling fan cuts in.
18If adjustment of the mixture (CO content)
is required, the air cleaner must be removed
for access to the adjustment screw, as
follows.
19Remove the air cleaner, and prise the
tamperproof seal from the mixture screw.
20Loosely refit the air cleaner, ensuring that
the vacuum pipe and the camshaft cover
breather hose are securely connected and
free from restrictions (there is no need to
secure the air cleaner in position).
21On completion, fit a new tamperproof seal
to the mixture screw (the service replacement
plug is coloured blue), and refit the air cleaner
assembly.
Fuel injection
2.0 litre SOHC models
22The idle mixture can be checked and if
necessary adjusted as follows:
23Run the engine until it is at normal
operating temperature.
24Stop the engine and connect a
tachometer and an exhaust gas analyser in
accordance with the manufacturer’s
instructions.
16Mixture adjustment check
1•12Every 6000 miles or 6 months
15.9 Pierburg 2V carburettor adjustment
screw locations
A Idle speed screwB Idle mixture screwA Idle mixture screwB Idle speed screw
16.13 Weber 2V carburettor idle mixture
adjustment screw location (arrowed) -
2.0 litre models from 1985
15.13 Weber 2V TLD carburettor
adjustment screw locations
Caution: Refer to the
precautions in Section 1,
Chapter 4, Part A or B (as
applicable), before proceeding.
Before carrying out any carburettor
adjustments, ensure that the ignition
timing and spark plug gaps are set as
specified. To carry out the adjustments an
accurate tachometer and an exhaust gas
analyser (CO meter) will be required.

25Start the engine and run it at 3000 rpm for
15 seconds, ensuring that all electrical loads
(headlamps, heater blower etc) are switched
off, then allow the engine to idle and check
the CO content. Note that the CO reading will
initially rise, then fall and finally stabilise.
26If adjustment is necessary, remove the
tamperproof cap from the base of the airflow
meter, and turn the mixture screw using a
suitable Allen key to give the specified CO
content (see illustration).
27Checking and adjustment should be
completed within 30 seconds of the meter
readings stabilising. If this has not been
possible, run the engine at 3000 rpm, for 15
seconds, then allow the engine to idle. Re-
check the CO content and carry out further
adjustment if necessary.
28On completion of adjustment, stop the
engine and disconnect the tachometer and
exhaust gas analyser. Fit a new tamperproof
cap to the mixture screw.2.0 litre DOHC models
29On models with a catalytic converter, the
mixture is controlled by the EEC IV module.
No manual adjustment is possible.
30On models without a catalytic converter,
the idle mixture can be adjusted as follows:
31Run the engine until it is at normal
operating temperature.
32Stop the engine, and connect a
tachometer and an exhaust gas analyser in
accordance with the equipment
manufacturer’s instructions.
33Start the engine and run it at 3000 rpm for
15 seconds, ensuring that all electrical loads
(headlamps, heater blower, etc) are switched
off. Allow the engine to idle, and check the CO
content. Note that the reading will initially rise,
then fall and finally stabilise.
34If adjustment is necessary, remove the
cover from the mixture adjustment
potentiometer (located at the rear right-handside of the engine compartment, behind the
MAP sensor), and turn the screw to give the
specified CO content (see illustrations).
35If adjustment does not produce a change
in reading, the potentiometer may be at the
extreme of its adjustment range. To centralise
the potentiometer, turn the adjustment screw
20 turns clockwise followed by 10 turns anti-
clockwise, then repeat the adjustment proce-
dure.
36Checking and adjustment should be
completed within 30 seconds of the meter
readings stabilising. If this has not been
possible, run the engine at 3000 rpm for 15
seconds, then allow the engine to idle. Re-
check the CO content, and carry out further
adjustments if necessary.
37On completion of adjustment, stop the
engine, and disconnect the tachometer and
the exhaust gas analyser. Refit the cover to
the adjustment screw.
1Fluid level should be checked with the
transmission at operating temperature (after a
run) and with the vehicle parked on level
ground.
2Open and prop the bonnet. With the engine
idling and the handbrake and footbrake applied,
move the gear selector through all positions
three times, finishing up in position “P”,
3Wait one minute. With the engine still idling,
withdraw the transmission dipstick (see
illustration).Wipe the dipstick with a clean
lint-free rag, re-insert it fully and withdraw it
again. Read the fluid level at the end of the
dipstick: it should be between the two
notches.
4If topping-up is necessary, do so via the
dipstick tube, using clean transmission fluid of
the specified type (see illustration).Do not
overfill.
5Stop the engine, refit the dipstick and close
the bonnet.6Note that if the fluid level was below the
minimum mark when checked or is in
constant need of topping-up, check around
the transmission for any signs of excessive
fluid leaks.If present, leaks must be rectified
without delay.
7If the colour of the fluid is dark brown or
black this denotes the sign of a worn brake
band or transmission clutches, in which case
have your Ford dealer check the transmission
at the earliest opportunity.1Place the vehicle over a pit, or raise and
support it at front and rear. The vehicle must
be level for an accurate check.
2If the gearbox is hot after a run, allow it to
cool for a few minutes. This is necessary
because the oil can foam when hot and give a
false level reading.
18Manual gearbox oil level
check17Automatic transmission fluid
level check
Every 12 000 miles or 12 months 1•13
1
16.34b . . . to enable mixture adjustment -
DOHC models
17.4 Topping-up the transmission fluid17.3 Automatic transmission dipstick
location and markings
16.34a Remove the cover from the mixture
adjustment potentiometer . . .16.26 Adjusting the idle mixture -
SOHC models
Every 12 000 miles (20 000 km) or 12 months

3Wipe clean around the filler/level plug.
Unscrew the plug and remove it(see
illustration).
4Using a suitably marked piece of bent wire
as a dipstick, check that the oil level is as
shown in the table at the top of this page,
according to gearbox type.
5Top-up the level if necessary, using clean
oil of the specified type. Do not overfill, as this
can lead to leakage and difficult gear
changing. Allow excess oil to drip out of the
filler/level hole if necessary. Refit and tighten
the filler/level plug on completion.
6The frequent need for topping-up can only
be due to leaks, which should be rectified.
The most likely sources of leaks are the rear
extension housing and input shaft oil seals.
7No periodic oil changing is specified, and
no drain plug is fitted.
1Work around the vehicle, and lubricate the
bonnet, door and tailgate hinges with a light
machine oil.
2Lightly lubricate the bonnet release
mechanism and exposed sections of inner
cable with a smear of grease.
3Check the security and operation of all
hinges, latches and locks, adjusting them
where required. Where applicable, check the
operation of the central locking system.
4Check the condition and operation of the
tailgate struts, renewing them if either is
leaking or is no longer able to support the
tailgate securely when raised.
1The correct functioning of the spark plugs is
vital for the correct running and efficiency of
the engine. It is essential that the plugs fitted
are appropriate for the engine.
2Make sure that the ignition is switched off
before inspecting the HT leads to see if they
carry their cylinder numbers. Note that the
position of No 1 cylinder HT lead in the
distributor cap is marked with either a pip, or
a number “1 “.3Where necessary, for improved access
remove the air cleaner and/or the inlet hose.
4Disconnect the leads from the plugs by
pulling on the connectors, not the leads.
5On 2.0 litre DOHC carburettor models, the
location of the spark plugs and the close
proximity of the carburettor makes spark plug
access difficult, particularly when removing
the plugs from cylinders 2 and 3. It is
suggested that a 3/8 inch ratchet drive spark
plug socket with rubber insert and long
extension bar is used, possibly in conjunction
with a universal joint adapter. It is also
advisable to disconnect No 3 cylinder HT lead
from the distributor first, to allow some slack
for disconnection at the spark plug.
6Clean the area around each spark plug
using a small brush, then using a plug
spanner (preferably with a rubber insert),
unscrew and remove the plugs(see
illustration).Cover the spark plug holes with
a clean rag to prevent the ingress of any
foreign matter.
7Before fitting new spark plugs, check that
the threaded connector sleeves are tight. As
the plugs incorporate taper seats, make sure
that the threads and seats are clean.8On DOHC models before refitting the spark
plugs, coat their threads with suitable anti-
seize compound, taking care not to
contaminate the electrodes.
9Screw in the spark plugs by hand, then
tighten them to the specified torque. Do not
exceed the torque figure.
10Push the HT leads firmly onto the spark
plugs, and where applicable refit the air
cleaner and/or inlet hose.
1Refer to the Specifications at the beginning
of this Chapter and check the tension of each
drivebelt at the point stated. Check the full
length of each drivebelt for cracks and
deterioration. It will be necessary to turn the
engine in order to check that portion of the
drivebelt in contact with the pulleys. Renew or
tension each belt as necessary as follows,
according to model type:
SOHC models
2Note that two drivebelts are fitted to models
equipped with power steering and both
should be renewed if either one is
unserviceable. Where fitted, the air
conditioning compressor is driven by a
separate belt.
3Disconnect the battery negative lead.
4Where applicable, remove the air
conditioning compressor drivebelt.
5Loosen the alternator mounting and
adjustment nuts and bolts, and pivot the
alternator towards the cylinder block.
6Slip the drivebelt(s) from the alternator,
water pump, crankshaft and (where
applicable) the power steering pump pulleys.
7Fit the new drivebelt(s) over the pulleys,
then lever the alternator away from the
cylinder block until the specified belt tension
is achieved. Lever the alternator using a
wooden or plastic lever at the pulley end to
prevent damage and straining the brackets. It
is helpful to partially tighten the adjustment
link bolt before tensioning the drivebelt(s).
21Auxiliary drivebelt check
20Spark plug renewal
19Hinge and lock check and
lubrication
1•14Every 12 000 miles or 12 months
18.3 Gearbox filler/level plug location
(arrowed) - N type gearbox
20.6 Removing a spark plug - CVH engine
Note: The vehicle build code appears as the twelfth and thirteenth characters of the VIN number
on the plate in the engine compartment.
Gearbox type
All four-speed gearboxes
All five-speed gearboxes up to April 1984 (build
code E6) except those subsequently fitted with
a modified extension housing
All five-speed gearboxes from May 1984 (build
code EC) to end of April 1985 (build code FP)
and all vehicles built up to April 1984 (build
code E6) subsequently fitted with a modified
gearbox extension housing
All five-speed gearboxes from May 1985Oil level
0 to 5.0 mm (0 to 0.2 in) below lower edge of
filler/level hole
Level with bottom edge of filler/level hole
20.0 to 25.0 mm (0.79 to 0.99 in) below lower
edge of filler/level hole
0 to 5.0 mm (0 to 0.2 in)below lower edge of
filler/level hole
Number each HT lead using
sticky tape or paint before
removal so as to avoid
confusion when refitting.