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Volvo
S40
Engine
Symptoms
Runs Rough
2002 Volvo S40 stalls at lights and rough running
2002 VOLVO S40
145,000 MILES • 4 CYL • FWD • AUTOMATIC
YAKSURY
MEMBER
1 POST
FOLLOW
can oyu tell whats wrong with my car it stalls at traffic lights started and runs rough
Aug 21, 2010 at 6:12 PM
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RASMATAZ
CERTIFIED EXPERT
75,992 POSTS
Engine running rough or misfiring can be cause by the following:
1.Defective spark plug
2.Inadequate spark/coil,defective spark plug wire.
3.Lack of compression
4.False air leakage.
5.Faulty fuel injectors.
6.Insufficient fuel pressure.
7.Contaminated fuel.
8.EGR valve that is leaking.
9.Oxygen sensors.
10.Throttle position sensor.
11.Idle air control valve.
Aug 21, 2010 at 9:22 PM