Question about 1995 Pontiac Sunfire

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Rough Idle Have taken vehicle in to a garage and they discovered that One cylinder on this 4 clinder 1995 Pontiac Sunfireis not firing - changed all coils, plugs etc. checked the fuel filter they are mistified. What else can it be?

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  • Pontiac Master
  • 2,039 Answers

Simple problem like misfire and the garage cant find it come on get the car out of there if everything was done properly and i dought that you need to check the compresion of the cylinder is bad chip valve bad ring one time i fix a sunfire the rocker came of open the valve cover check the rocker on the valve maybe one of if rocker of the comppression will show gone good spark gone injector let me know hope it help FIXYA OUR POST THANKS PIERRE

Posted on Jul 11, 2008

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Without trouble codes you are fishing in the dark. If the engine has a cylinder that is dead at idle from a fuel injector or ignition problem, it should have a code for a miss on that cylinder. A mechanical problem like a burned valve could cause the problem without setting a code. Have you checked compression on all 4 cylinders ? ?

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I am in need of the firing order for the spark plug wires for a 1991 pontiac grand prix


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1 Answer

I need 3.1 firing order daigram for a pontiac grand am 1995, I believe the coils have been replaced and are not in order, Thanks Marty


I apologize for the late response...Due to the bad economic situation this site has had a substantial (+50%) increase in the number of questions being asked in the last four months.

For the 3.1L:
Firing Order:
1-2-3-4-5-6

Cylinders:
1-----3-----5
2-----4-----6
(front of vehicle)

Ignition Connections:
| 5 - 2 | | 3 - 6 | | 4 - 1 |
(front of vehicle)


Let me know if this helped, or if you have additional information or questions. Feel free to contact me at FixYa.com!

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1 Answer

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