Check engine light

Tiny
ECLASS6
  • MEMBER
  • 2001 VOLVO S40
  • 133,000 MILES
My check engine light keeps coming on. Tested and keeps giving code P302 #2 cylinder misfire. Car has been tuned up by a volvo service technician (plugs, wires and coils). Also engine control temp sensor also replaced and gas cap as well. Yet the light keeps coming back. You can't feel a misfire while driving either. Can't afford to keep paying mechanic, what else can I do?
Monday, April 22nd, 2013 AT 8:50 PM

3 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Was the compression checked?

Was the injector and related wiring checked?

Gas cap has no effect on it.

Roy
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Tuesday, April 23rd, 2013 AT 2:43 AM
Tiny
ECLASS6
  • MEMBER
  • 2 POSTS
Yes the compression was ok and the plugs, wires and coils were replaced. I can't say that the injector it self was actually checked. I guess I should make that the next thing. Is it possible that is something that I can do myself, if so how do I go about it. Also I've been doing some reading and it seem's that this (check engine light) is a common issue with this car. I recently bought it used and wasn't aware of it until now. Thank you very much for your reply.
Elmer
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Tuesday, April 23rd, 2013 AT 8:13 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
The light is common on all cars.

Do you have a professional injector cleaner?

Roy
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Wednesday, April 24th, 2013 AT 2:34 AM

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