1995 RENAULT MEGANE SCENIC air filter

99374R
ANTIPOLLUTION
Exhaust gas recirculation (EGR)
14
K7M engine
CLEANING THE EGR SOLENOID VALVE (if there is a
fault)
In certain cases, a deviation in the nitrous oxide
value at the exhaust may be noted due to the fact
that the EGR solenoid valve has become
contaminated. If this is noted, we recommend
that at approximately 50000 miles( 80 000 km),
the EGR solenoid valve is cleaned to ensure correct
depollution.
Remove as much contamination from the EGR
solenoid valve as possible then blow out with
compressed air.
Remove the two mounting bolts securing the
solenoid to the valve. Remove the solenoid
(ensure that no impurities enter the EGR valve
diaphragm area).
Remove all the pipes from the solenoid.
With no electrical feed, blow compressed air in
through union (C).
With 12 V feed, blow compressed air in through
union (B).This ensures that any possible impurities are
removed the way they entered the valve.
IMPORTANT: do not blow compressed air on the
EGR solenoid valve diaphragm.
Refit the pipes to the solenoid.
Renew:
- the O ring on union (C),
- the filter unit.
Refit the solenoid to the valve.
DI1409-1
14-17

ANTIPOLLUTION
Exhaust gas recirculation (EGR)
14
F8Q engine
Depollution for this engine uses recirculation to the inlet of some of the exhaust
gasses.
Recirculation of the exhaust gas reduces the combustion temperatures to reduce the
formation of nitrous oxides (NOx).
Recirculation is only permitted under certain load and temperature conditions.
99259R
1Inlet manifold
2Exhaust manifold
3EGR valve
4Air filter
5EGR solenoid
6Microswitch (on injection pump)
7Vacuum pump
8Injection pump load lever
9Brake servo
14-18

ANTIPOLLUTION
Catalytic converter
14
FAULT FINDING
Faults which may cause a customer complaint due
to the catalytic converter.
1. Catalytic converter polluted by an
accumulation of soot, causing poor efficiency
of the converter.
Cause :
- prolonged town driving,
- air filter dirty,
- poor operation of the EGR system
- injection pump fault, etc.
Customer complaint:
- lack of power,
- large amount of smoke.
Solution:
De-contamination of the exhaust pipe by hard
driving on open roads.
2. Loss of efficiency due to premature aging of
the monolith*
Cause :
- injection incorrectly set,
- oil vapour rebreathing fault, etc.
Customer complaint:
Abnormal engine operation.
Solution:
Replace the catalytic converter.
(*) By prolonged operation at exhaust gas
temperatures which are too high (greater
than 800°C). Diesel engine
14-20

INJECTION
General
17
K7M engine
1Injection computer
2Pinking sensor
3Coolant temperature sensor
4TDC sensor
5Fuel vapour recirculation solenoid valve
7Idle speed regulation stepping motor
8Throttle position potentiometer
9Air temperature sensor
10Absolute pressure sensor
11Canister
12Coil for cylinders 1 - 4
13Coil for cylinders 2 - 3
14Fuel pump relay
15Anti-interference condenser
16Air filter
17Oxygen sensor
18Power assisted steering pressostat
19EGR solenoid valve
20Vacuum reservoir
21EGR air filter
LOCATION OF COMPONENTS
17-9

INJECTION
General
17
F3R engine
1Injection computer
2Pinking sensor
3Coolant temperature sensor
4TDC sensor
5Fuel vapour recirculation solenoid valve
6Cylinder reference sensor
7Idle speed regulation solenoid valve
8Throttle position potentiometer
9Air temperature sensor
10Absolute pressure sensor
11Canister
12Coil for cylinders 1 - 4
13Coil for cylinders 2 - 3
14Fuel pump relay
15Anti-interference condenser
16Air filter
17Oxygen sensor
LOCATION OF COMPONENTS
17-11

COOLING
Radiator
Unclip the power assisted steering reservoir.
Remove:
- the 4 mounting bolts from the fan mounting
on the radiator and remove it,
- the 4 mounting bolts for the condenser on the
radiator,
19
Unclip the grille at (D) using a screwdriver and re-
lease the sides by lifting the tabs at (E).
99187R1
Remove the 6 mounting bolts for the upper cross
member and remove it.
98838R
99611R
- the radiator.
REFITTING
Refitting is the reverse of removal.
Fill and bleed the cooling circuit.
Disconnect the upper radiator hose by removing
the air filter inlet sleeve.
F8Q ENGINE / AC
19-5

MANUAL GEARBOX
Gearbox (Removal - Refitting)
21
Remove :
- the air filter sleeve,
- the tie-rod from the shock absorber turret,
- the clutch cable. Slacken but do not remove bolt (B) then remove
mounting bolt (C) from the suspended engine
mounting rod.F
engine
99309R
Remove the rear mounting.
Remove shock absorber actuator (on version F8Q).
Remove :
- the expansion bottle,
- the air filter mounting.
Release the wiring.
89204S
Position the engine support tool and take the
weight of the engine and transmission assembly.
98750S
99213S
21-14

Strainer mounting bolts 0.5
Sump mounting bolts1
Mounting bolts for engine mounting
dampers on side member2
Rear support mounting bolts6.5
Wheel bolts9
Strainer mounting bolts0.5
Distributor mounting bolts0.5
AUTOMATIC TRANSMISSION
Hydraulic Distributor
23
REMOVAL
Put the vehicle on a 2 post lift.
Put the lever in the "P" (Park) position.
Drain the automatic transmission (mechanismsec-
tion;
drain plug with triangular socket).
Remove:
- the expansion bottle,
- the air filter,
- the two upper bolts (A) of the engine moun-
ting damper and slacken the other two (B), wi-
thout removing them.
TIGHTENING TORQUES (In daN.m)For versions with ABS
Remove the mounting nut (C) from the ABS
electro-pump assembly on the rubber mounting.
Remove the front left hand wheel and remove the
plastic shield from the wheel arch (in order to be
able to remove the two rear mounting bolts of
the automatic transmission sump at a later stage).
Using the component jack, raise the automatic
transmission.
94933-1R
94933R
94887S
23-9