2002 Volvo S40 stalls at lights and rough running

Tiny
YAKSURY
  • MEMBER
  • 2002 VOLVO S40
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 145,000 MILES
Can oyu tell whats wrong with my car it stalls at traffic lights started and runs rough
Saturday, August 21st, 2010 AT 6:12 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 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.
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Saturday, August 21st, 2010 AT 9:22 PM

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