I am suggesting you a link from where you can find the service and repair manual with wiring diagram to solve the problem http://toolsnyou.com/
SOURCE: 1998 Sunfire rough running (missfire) common causes?
check the coils my 98 had a crack coil that drove me nuts. If thats the problem make sure you replace both ignition coils
SOURCE: Misfire
Check to make sure the fuel injector is working on that cylinder, check the connector to the injector for a loose or damaged pin, get a NOID tester from a parts store and see if the injector flashes the NOID light while the engine is running or cranking.
SOURCE: pontiac sunfire
I had that problem last year. I bought a new starter but it was not the correct one for my car. For the 98 there are two different starters. I bought the wrong one the first time. My step father started to put it one and realized it was not the same as the one he just pulled off. Ending up taking it with us when we returned the orginial one I bought. The orginial one I bought was about $70 the correct one was $400. The auto store did not have the correct one listed as a replacement part. Until the number off of the part was keyed into the system and found out that it was just not the common replacement part.
SOURCE: How to change spark plugs in a 1998 Pontiac Sunfire GT
gt will have a 2.4L DOHC their beneath the cam cover right ontop
SOURCE: what do you gap a spark plug at for a 1998 pontiac
Hello ryanjnichols: My name is Roger and I can help. You did not say which engine is in your car. So here are the plug gap for the two engines listed. The plug gap for a 2.2 engine is .040 inch. And for the 2.4 engine the gap is .060 inch. Should you need further help please just ask. Please rate the answer you received. Thank You for using Fix Ya. Roger
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