2002 Cadillac Deville "rough idle" Questions

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...rough A idle speed motor will not cause your engine to run rough.It might idle high or stall. If your engine is running rough check your spark plugs and wires along with your cap and rotor

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at stop lights or stopped traffic/ rough idle, pulling or surges when driving and at stopped lights and stopped traffic-why? Try filling it with a top grade premium gas. Replace the idle control motor

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Question about Cadillac DeVille

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but engine after running a few minutes runs rough worst on idle, but roughness can be felt on the road also I had same problem, and found the problem again in egr, replaced it under warranty and bingo

rough idle in start up minimal driving will stop smoke and rough idle i think you have a water leak maybe the head gasket is going bad any way gasoline produces water and is normal with cold

Question about Cadillac DeVille

3 Answers

...rough just on idle replaced plugs-wires-cap-all motor mts-cleaned injectors.runs and drives perfect but at idle in gear it is rough.can you help me?4.9 eng If by rough you mean it sputters like it's ...

Question about Cadillac DeVille

1 Answer

rough idle. rpms drop. misfire. rough idle. rpms drop when engine is doing so. looks like a engine misfire. changed fuel injection, didnt do anything. 65k miles. should i change the spark plugs? try ...

Question about Cadillac DeVille

1 Answer

...rough when air con is turnd on ur idle my be running to low to start with the air con is a pump and will take power from the engine and wen u turn on ur air con there is a clutch on ur pump witch ...

Question about Cadillac DeVille

1 Answer

...rough Starts and runs fine as long as you don't stop. Once you stop and let idle for a couple of minutes the engine light comes on and the engine begins to run very rough. Will run great with ...

Question about Cadillac DeVille

1 Answer

...rough idle and it does not do it everytime. Here are the most common causes of surges, stalls at stops, low erratic idle speed, rough idle and engine hesitation (and other problems), it is in most ...

Question about Cadillac DeVille

1 Answer

...out these symptoms- Is your car idling properly? Does it get rough under load or other conditions? Any idle or off idle irregularities at all? If so these symptoms may be linked to the I.A.C. ...

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