Rough Idle ?
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Joined: Apr 2003
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From: Fresno, Ca
Rough Idle ?
Hello, Have a 1990 V6. I changed Plug Wires , Plugs, PCV Valve , Air Clearner and Vaccum Hoses.
The car still has a rough idle most noticable when
after it warms up. Car seems to run fine at speeds but has a miss at idle speeds . Could I have missed a vaccum hose or would dirty fuel injectors
cause this?.....any ideas would be greatly appreciated.......Thanks, Bob
The car still has a rough idle most noticable when
after it warms up. Car seems to run fine at speeds but has a miss at idle speeds . Could I have missed a vaccum hose or would dirty fuel injectors
cause this?.....any ideas would be greatly appreciated.......Thanks, Bob
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Joined: Jan 2000
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You may have injector flow issues, or compression problems, but you still may have ignition problems as well. The coils are something to check. Inspecting vacuum lines, gaskets, and the TB for leaks is always a good idea. You should also check the PCV, fuel pressure regulator, and other vacuum loads for leakage.
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Joined: Jan 2003
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From: Northwestern Pennsylvania
Car: 1985 Pontiac Trans Am
Engine: 355 with stuffs.
Transmission: 700R4
Axle/Gears: 4.10 Posi
Did you take a look at your Dist. cap and rotor? check those out, and while you're there, remove the ignition module (you'll need a 5.5mm socket) and give it a fresh dose of dielectric grease. Mine always gave me problems.
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