Question about 2002 Cadillac Deville
JUST PUT IN NEW SPARK PLUGS
I would check the throttle body for air leaks, but assuming the engine is running fine, there is an adjustment where the accelerator cable attaches to the throttle body. Normally you would not need to adjust, but this might help.
Posted on Oct 07, 2014
When you replaced the back plugs (fun job, right?), you may have damaged or disconnected a vacuum line or disturbed an electrical connection in the area - check all of these. Other probable causes are a malfunctioning or dirty EGR valve or idle air control (IAC) motor, or a bad throttle position sensor (TPS). These devices may need to be checked, but usually don't fail without warning - check for error codes (DTCs).
Posted on Sep 28, 2014
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Posted on Jan 02, 2017
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