1994 Cadillac DeVille "high idle speed" Questions

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Question about Cadillac DeVille

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...idle very high sometimes around 2400-3000 rpms when it does this it wants to stay at a constant speen of 50-70 mph when its doing this i have to ride the breaks... im taking a very long trip soon and ...

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idles high when i start my1994 cadillac deville It is supposed to have a high idle when first started this is normal automatic idle speed control strategy

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...the EGR is stuck open mechanically or from carbon the idle can go high . A bad IAC or incorrect signal from the computer module can cause high idle . Vacuum leaks from intake gaskets and PCV valves

Question about Cadillac DeVille

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...high?? I mean I can be at a stop light and take my foot of the brake and the car goes by itself, and it gets good speed like that??? if your EGR valve is stuck open its adding "false" air into the ...

...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

...high and when i let off the brake it will increase in speed w/o pressing the gas pedal. any ideas? sounds like the ISC ( idle speed control ) motor is being told by the computer to extend or else its ...

...high speed on the fan or the high speed relay could be bad.  Then you could have a clogged radiator or cooling system needing a backflush.  Some Quickchange oil companies will flush a ...

Question about Cadillac DeVille

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...idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 ...

...high pitched wineing sound during this period. The noise goes away as soon as the engine has dropped to around 700-900 rpms, and does not return. Any idea's? The whine sounds like the power steering ...

Question about Cadillac DeVille

1 Answer

...high what can i do. Get the IAC valve checked.Remove the Iac valve from the throttle body. It is on the side facing the front higher than the tps sensor. It has a 4 wire connector. Make sure this is ...

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