1989 Pontiac Firebird Repair Question
1989 Pontiac Firebird Rough Idle
1989 Pontiac Firebird V8 Two Wheel Drive Automatic 140000 miles
I had just bought a 1989 firebird formula 350 sounded good till i bought it and drove it home , it was sitting for a few years so i probly shouldnt have drove it home but i babyd it. I bought spark plugs, wire , air filter, pcv vale, fuel filter , oil filter , everything for a good tuneup . but before installing any of it i brought it over my gf's brother in law who is good with cars , it was idleing at about 1k rpm, and when i was driving it it seemd like if i didnt press on the gas a little the engine would hesitate a little. Also you can smell alot of gas when it is running.he tinkered with it a little and got it to idle around 500 but kept jumping a few hundred. then he checked it with his thing idk what it is . error cods like 13,22 ,33 came up. he told me to go out and buy a throttle postion sensor and a idle aie controll motor . was wonderign what you guys think
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.
8.EGR valve that is leaking.
10.Throttle position sensor.
11.Idle air control valve.
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