1995 RENAULT MEGANE SCENIC low oil pressure

Contents
Consumables
Identification
Oil consumption
Oil pressure
Engine - Gearbox
Engine and transmission assembly
Sump10-1
10-1
10-2
10-3
10-4
10-19
10-43
TOP AND FRONT OF ENGINE
Timing belt
Cylinder head gasketPage Page
11
Engine and
peripherals
11-1
11-12 ENGINE AND PERIPHERALS
10FUEL SUPPLY - PUMPS -
PREHEATING
Fuel supply
Fuel cut-out on impact
Fuel gallery
Injectors
Fuel filter
Pump flow
Supply pressure
Diesel equipment
Specifications
Description of the pump
Tightening torques (in daN.m)
Special notes
Idle speed settings
Microswitches
Pump
Pump - timing
Coded solenoid valve
Operating diagram
Pre-post-heating unit
Injector holder - heater plug
Fuel filter
Coolant temperature sensor
Inlet - exhaust manifolds
Pump
Brake assistance vacuum pump
Mechanical power assisted steering
pump13-1
13-3
13-8
13-9
13-10
13-11
13-15
13-16
13-17
13-18
13-20
13-22
13-23
13-27
13-28
13-29
13-30
13-36
13-37
13-39
13-40
13-41
13-4213
FUEL MIXTURE
Specifications
Throttle body
Inlet manifold
Exhaust manifold
Manifolds12-1
12-7
12-15
12-18
12-2012

TOP AND FRONT OF ENGINE
Cylinder head gasket
11F8Q ENGINE
REMOVAL
Put the vehicle on a 2 post lift.
Disconnect the battery.
Remove the engine undertray.
Drain the cooling circuit via the lower radiator
hose (radiator end).
SPECIAL TOOLING REQUIRED
TIGHTENING TORQUES (in daN.m)
Wheel bolt 9
Crankshaft pulley bolt 12
Suspended engine mounting cover bolt 6
Suspended engine mounting limiter bolt 4
Tensioner nut 5
EQUIPMENT REQUIRED
Star socket ST X 14 FACOM for example
Star socket EX 255 FACOM for example
Engine support tool DESVIL M300 for example
99174R
Mot. 251-01 Dial gauge mounting
Mot. 252-01 Pressure plate for measuring cylinder liner protrusion
Mot. 1311-06 Tool for removing fuel pipe
Mot. 591-02 Index
Mot. 591-04 Angular wrench for tightening the cylinder head
Mot. 1054
TDC pin
Mot. 1159 Tool for retaining the engine on the sub-frame
Mot. 1202 Hose clip pliers
Mot. 1273 Tool for checking belt tension
Mot. 1281-01 Oil filter wrench
Mot. 1289-03 Fork for centring suspended engine mounting limiter
Remove:
- the timing belt (see section 11 - timing belt),
- bolts (A) mounting the tensioner, together
with bolt (B) for the alternator drive belt ten-
sion strut mounting,
11-22

FUEL MIXTURE
Specifications
12
DESCRIPTION MAKE/TYPE SPECIAL NOTES
ComputerSIEMENS FENIX 555 tracks
Injection Semi-sequential regulated multipoint injection
Ignition Static with two dual output coils
Power module integral in computer
One pinking sensor
Plugs
EYQUEM FC 52 LS
CHAMPION C10YCGap: 0.9 mm
Tightening torque: 2.5 to 3 daN.m
Air filter Replace every other oil change
Fuel filter Mounted in front of the fuel tank under the vehicle
Replace at major service
Fuel pump
WALBROSubmerged in fuel tank
Flow: 80 litres/hour minimum for regulated
pressure of 3 bars and voltage of 12 V
Pressure regulator Regulated pressure
Zero vacuum: 3 ± 0.2 bars
Vacuum of 500 mbar : 2.5 ± 0.2 bars
Solenoid injector
SIEMENSVoltage: 12 V
Resistance : 14.5 ± 1 Ω
Throttle body
PIERBURG
714 186Diameter 44 mm
Idle speed regulation stepping
motor
EGR (K7M 703) solenoid valve
PIERBURG
72213000Voltage: 12 V
Resistance : 30 ± 3 Ω
Fuel vapour recirculation
canister
Solenoid valve
CAN 10
DELCO REMY
Voltage: 12 V
Resistance : 35 ± 5 Ω
Heated oxygen sensor NGK Voltage at 850°C
Rich mixture: > 625 mvolt
Lean mixture: 0 to 80 mvolt
Tightening torque: 4.5 daN.m
Fault finding
FICHE n° 27
CODE D13
SELECTOR ON S8
Throttle potentiometer
Idle speed regulation: 5 ≤ #17 ≤ 47
Full load: 164 ≤ #17 ≤ 253
R.C.O. idle speed: 4 % ≤ #12 ≤ 14 % (K7M 720)
6 % ≤ #12 ≤ 15 % (K7M 702/703 in P and N)
10 % ≤ #12 ≤ 20 % (K7M 703 in D)
Adaptive R.C.O
idle speed: - 2.4 % ≤ #21 ≤ + 6.2%
Adaptive richness
operation: 0 ≤ #30 ≤ 208
Adaptive richness
idle speed: 100 ≤ #31 ≤ 255 (K7M 720)
104 ≤ #31 ≤ 255 (K7M 702/703)
12-4

FUEL MIXTURE
Specifications
12
DESCRIPTION MAKE/TYPE SPECIAL NOTES
ComputerSIEMENS FENIX 555 tracks
Injection Sequential regulated multipoint injection
Ignition Static with two dual output coils
Power module integral in computer
One pinking sensor
Plugs
EYQUEM C 52 LS
CHAMPION N7YCX
BOSCH W7DCOGap: 0.9 mm
Tightening torque: 2.5 to 3 daN.m
Air filter Replace every other oil change
Fuel filter Mounted in front of the fuel tank under the vehicle
Replace at major service
Fuel pump
WALBROSubmerged in fuel tank
Flow: 80 litres/hour minimum for regulated
pressure of 3 bars and voltage of 12 V
Pressure regulator WEBER
BOSCHRegulated pressure
Zero vacuum: 3 ± 0.2 bars
Vacuum of 500 mbar : 2.5 ± 0.2 bars
Solenoid injector
SIEMENSVoltage: 12 V
Resistance: 14.5 ± 1 Ω
Throttle body SOLEX
Diameter 60 mmReference: 127 F3R 751 without AC - F3R 750
Reference: 132 F3R 751 AC
Idle speed regulation solenoid
HITACHI
AESP 207-17Voltage: 12 V
Resistance: 9.5 ± 1 Ω
Fuel vapour recirculation
canister
Solenoid valve
CAN 10
DELCO REMY
Voltage: 12 V
Resistance: 35 ± 5 Ω
Heated oxygen sensor
BOSCH LSH 25Voltage at 850°C
Rich mixture: > 625 mvolt
Lean mixture: 0 to 80 mvolt
Tightening torque: 4.5 daN.m
Fault finding
FICHE n° 27
CODE D13
SELECTOR ON S8
Throttle potentiometer
Idle speed regulation: 8 ≤ #17 ≤ 38
Full load: 188 ≤ #17 ≤ 245
R.C.O. idle speed: 20 % ≤ #12 ≤ 40 % (F3R 750)
18 % ≤ #12 ≤ 38 % (F3R 751)
Adaptive R.C.O
idle speed: - 6.2 % or - 8.6 ≤ #21 ≤ + 6.2 %
Adaptive richness
operation: 82 ≤ #30 ≤ 224
Adaptive richness idle speed: 32 ≤ #31 ≤ 224
12-6

PUMP
Mechanical power assisted steering pump
13
CHECKING THE OIL PRESSURE
SPECIAL TOOLING REQUIRED
Mot. 453-01 Hose clamp pliers
Dir. 1204 Pressure test union
Dir. 803 Metric thread union
Fre. 1085
or Pressure gauge
Fre. 244-03
Fre. 284-06 Connecting pipe
Fit clamp Mot. 453-01 to the low pressure pump
hose.
Disconnect the high pressure pipe (take
precautions to catch the oil which will run out).
Insert union Dir. 803 (metric thread) between the
pipe and the pump.
For engines where it is fitted, remove the
pressostat on the rigid pipe (high pressure).
Connect the pressure test union
Dir. 1204 and the oil pressure gauge
Fre. 1085 (or Fre. 244-03 + Fre. 284-06).
77840R1
Connect pressure gauge Fre. 1085 (or Fre. 244-03
+ Fre. 284-06).
Remove clamp Mot. 453-01.
Top up the pump level and run the engine to
check the pressure.
Wheels in straight line:
Regardless of engine speed, the pressure should
not exceed 5 to 7 bars.
Full lock to one side:
Hold the steering at full lock, the maximum
pressure should be 79 to 86 bars.
This operation should not be prolonged to avoid a
high increase in the oil temperature.
Remove union Dir. 803 and pressure gauge
Fre. 1085 or Fre. 244-03 , cutting the supply to the
pump with clamp Mot. 453-01.
Reconnect the high pressure pipe and remove
clamp Mot. 453-01.
Top up the oil in the reservoir.
13-46

Oil pressure
Before starting:
- if the gearbox has been drained, fill it with 3.5
litres of oil,
- if you are simply checking the level, you must
add 0.5 litre of the recommended type of oil.
1-Vehicle on a 4 post lift, transmission at am-
bient temperature.
2-Start the engine with the selector lever in the
Park position.
3-Connect the
XR25 test kit and enter:
D14then
#0 4
4-Raise the vehicle and allow the engine to run
until it reaches a temperature of 60 °C.
5-When the desired temperature has been rea-
ched, open the top-up plug; allow the excess
oil to overflow (must be more than 0.1 litre)
for approximately 20 seconds. Replace the
plug
6-If the volume of oil which flowed out is less
than 0.1 litre, the level is not correct. Repeat
the operation.
In this case, add 1 litre of the recommended oil
and allow the transmission to cool down between
successive operations.
AUTOMATIC TRANSMISSION
Filling - Levels
23
FILLING - TOPPING UP
Filling is performed though tube (D).
Use a funnel fitted with a 15/100 filter so as to
prevent any impurities entering.
The level
MUST be checked in accordance with the
following method:
94845R1
The transmission is fitted with an oil pressure
take-off. Connect the B.Vi. 1215 to check the
automatic transmission pressure sensor only.
The oil pressure cannot be altered.
Its value is determined by the electronic compu-
ter.
94845-1R
23-8