check engine light

2001 VOLVO S40
133,000 MILES
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ECLASS6
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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?
Apr 22, 2013 at 8:50 PM
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ASEMASTER6371
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was the compression checked???

was the injector and related wiring checked???

gas cap has no effect on it.

roy
Apr 23, 2013 at 2:43 AM
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ECLASS6
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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
Apr 23, 2013 at 8:13 PM
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ASEMASTER6371
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the light is common on all cars.

do you have a professional injector cleaner???

Roy
Apr 24, 2013 at 2:34 AM