1990 VOLVO 240 distrib

Volvo 1990 240 Model
l It is necessary to balance trailer brakes with the towing vehicle brakes\
to provide a safe stop (check
and observe State regulations).
l More frequent vehicle maintenance is required.
l Remove the ball and drawbar assembly when the hitch is not being used.
l Increase tire pressure to recommended full-load pressure. See section 'W\
heels and Tires."
Note: Refer to section entitled "Automatic transmission" for additional \
trailer hauling
tips.
Warning: Do not drive with trunk lid or tailgate
open!

Poisonous exhaust gases may enter via the open trunk lid or tailgate. (\
This is especially true for wagon
models.)
If the trunk lid or tailgate for any reason must be open, proceed as fol\
lows:
l Close the windows.
l Set the heating system controls for floor and defroster to max. and the \
blower to full speed (4). See
section titled "Heating and Ventilation".

Handling, roadholding

Vehicle load, tire design and inflation pressure are important for prope\
r handling. Therefore check that
the tires are inflated to the recommended pressure according to the vehi\
cle load.
Loads should be distributed so that capacity weight or maximum permissib\
le axle loads are not
exceeded.
It is recommended to use tires of the same make and dimensions on all fo\
ur wheels.

Warning: Do not mix radial ply and bias ply tires as this will adversely\
alter the vehicle handling
characteristics.

Roof rack

Permanent and removable roof racks are available from Volvo Accessories.\

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Volvo 1990 240 Model
l Observe the following points when in use.
l Avoid point loads. Distribute the load evenly.
l Place the heavy cargo at bottom of load.
l Observe that center of gravity and handling are influenced by the load w\
eight.
l Increasing load size increases wind resistance.
l Anchor the cargo correctly with a cord.
l Drive carefully. Avoid rapid starts, heavy cornering and heavy braking. \
l Max. roof load is 220 lbs (100 kg); use a root rack with a sufficient \
load rating.
pg. 51 Automatic transmission, Brake system
The following "Special Tips" apply to cars with automatic transmission

l For steep hills and when driving for prolonged periods at low speeds, po\
sition 1 should be selected.
Avoid, however, repeated changes since this can cause overheating of the\
transmission oil. For driving
on mountain roads with long persistent uphill gradients, select position\
2.
l When negotiating long, steep, downhill slopes, position 1 should be sele\
cted and position 2 for less
severe inclines, in order to obtain the best possible engine braking eff\
ect.
Do not hold the car stationary on an incline by using the accelerator pe\
dal. Instead, engage the hand
brake. This prevents the transmission oil from becoming overheated.
l 4th gear must be disengaged when hauling a trailer!
l If an additional transmission oil cooler is installed you can haul a tra\
iler with the overdrive engaged.
See next "special tip".
l When driving with heavy trailers, it is recommended that an additional o\
il cooler be installed. This
applies especially when driving under severe conditions e.g. mountain dr\
iving or prolonged driving at
high speeds without breaks. The additional oil cooler is available as a \
genuine Volvo accessory.
Regarding oil change, see section titled "Transmission oil".

Moisture on brake discs and brake pads affects braking.

Driving in rain and slush or passing through a normal car wash can cause\
water to collect on the brake
discs and pads. This will cause a delay in braking effect when the pedal\
is depressed. To avoid such a
delay, when the brakes are needed, depress the pedal occasionally when d\
riving in rain or slush.
This will remove the water from the brakes.
This should also be done after washing or starting in very damp weather.\


If the brake power assist does not function --
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Volvo 1990 240 Model
pg. 64 Service requirements
Engine Mechanical Components

Torque manifold nuts

The manifold nuts should be torqued at the 600-1,200 mile (1,000-2,000 \
km) inspection. A loose
manifold could alter air/fuel ratio and cause an increase in emission an\
d/or poor driveability.

Valves

The valve clearance should be checked every 30,000 miles (48,000 km). \

Vacuum fittings, hoses and connections

Unstable idle, misfiring or poor emission control is often caused by lea\
king vacuum hoses or
connections. Check hoses and connections on distributor vacuum unit, EGR\
valve (where applicable)
and connections on heater control servo systems and hydraulic brake serv\
o.

Exhaust Gas Recirculation (EGR)

This system operates by returning some of the exhaust gases to the engin\
e to be recombusted: since this
lowers the combustion temperature the amount of nitrogen oxides released\
into the atmosphere is
reduced.
The EGR valve should be cleaned at the 60,000 mile inspection and therea\
fter cleaned every 25,000
miles (40,000 km).

Timing belt

The timing belt tensioner should be adjusted at the 600-1,200 mile (1,0\
00-2,000 km) inspection.
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Volvo 1990 240 Model
WARNING!
The ignition system operates at very high voltages. Special safety preca\
utions must be followed to
prevent injury:
Always turn the ignition off when:
l connecting engine test and diagnostic equipment to the vehicle (timing \
light, tach-dwell tester,
ignition oscilloscope, etc.).
l Replacing ignition components e.g. plugs, coil, distributor, high-tensio\
n leads, etc.




Contents | Top of Page
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Volvo 1990 240 Model
Possible cause Correction
Intake system leaking. Check vacuum hose connections at manifold and
auxiliary air valve.
No fuel reaching engine. Check for fuel in the tank.

Check fuse No 4.
No spark Check that the high tension lead from the coil to the
distributor cap is connected and that the wires to the
distributor and coil are connected.

Check the fuse for the engine control system. The fuse
is located in the engine compartment on the left wheel
housing by the ignition coil.
Spark plugs, high tension leads or distributor
cap wet or defective. Clean the parts with a dry cloth or spray with a moisture
remover. Replace defective or worn parts.

If no fault is found following the above steps, contact
your Volvo dealer.
pg. 94 Service diagnosis
Condition: Erratic idle (misfiring)
Possible cause Correction
Intake system leaking. Check hose connections.
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Volvo 1990 240 Model
Spark plugs, high tension leads or distributor
cap worn (defective) Clean distributor cap and leads, check the cap for
cracks. Replace defective or worn parts.
Worn spark plugs. Remove. Clean or replace spark plugs.
Condition: Engine stalls at irregular intervals
Possible cause Correction
Defective wires. Check wire terminals at: fuel pump, fuse No. 5 and 7, coil, distributor,\
ignition
switch and relays.
Intake system
leaking. Check vacuum hose connections at manifold and auxiliary air valve.
Fuel filter clogged. Clean fuel tank filter and replace line fuel filter.
pg. 95 Service diagnosis
Condition: Excessive fuel consumption
Possible cause Correction
Fuel lines
leaking. Check
tightness.
Spark plugs
worn. Replace plugs.
Condition: Misfiring at highway driving speed

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Volvo 1990 240 Model

Type Positive pressure, closed system
Thermostat begins to open at 188.6 ° F
Fan belts, designation HC-38 x 918 (two)

Coolant: Volvo Coolant type C (blue-green)

Fuel system

The engine is equipped with an electronic fuel injection system.

Ignition System

Firing order 1-3-4-2
Ignition setting (12 ° B.T.D.C. at 750 rpm)
Spark plugs Bosch WR7DC (or equivalent)
Spark plug gap 0.028-0.032" (0.7-0.8 mm)
Tightening torque 15-22 ft. lbs. (20-30 Nm)
Distributor, direction of rotation Clockwise pg. 101 Specifications
POWER TRANSMISSION

Manual or automatic transmission. Hypoid type final drive.

Manual transmission M47 II
Reduction ratios:
1st gear 4.03:1
2nd gear 2.16:1
3rd gear 1.37:1 Rear axle reduction ratio:
4th gear 1.00:1 3.31:1
5th gear 0.82:1
Reverse 3.68:1
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