Question about 1992 Cadillac DeVille

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Idle problems with cadillac

My 95 cadillac sedan deville idle is high when i stop, slow down and everything. I have to pat the gas to get the idle to come down.

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Dee if the linkage is binding first, clean the throttle body and lubricate all moving parts if this doesn't solve it an accellerator cable may need replacing

Posted on Jul 17, 2009

  • Dennis Gentz
    Dennis Gentz Jul 19, 2009

    clean the throttle body and lubricate the cable

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It,s either not getting enough gas or not enough air. Check has and air filters.

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It sounds like the idle compensation circuit for the engine is dirty or faulty. Have your car checked at a shop. have them check the idle air motor for dirt or malfunction. It could be that it only needs to be cleaned or replaced.

The compensation circuit adjusts the idle/slow speed of the engine. The air conditioner puts a load on the engine and this circuit adjusts the engine speed to compensate. Also, when the car is cold this circuit adjusts the idle speed to prevent stalling and help the engine warm up faster. I hope this information helps you.

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Dash codes on my 92 cadillac sedan deville are E12,E52,E53 verry speratic idle and stalls before you put it in gear.I tuned it up (cap ,rotor,fuel filter idle solenoid.ran great for 2 days now runs worse...


throttle position sensor replace it. also in rare cases the map sensor will be bad . go to a junk yard and get your replacements it wont cost near as mutch. compared to the retail stores

Oct 20, 2009 | 1992 Cadillac DeVille

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My 92 cadillac sedan deville is idling very 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 possibly binding. Located on the drivers side of the throttle body . Also check for binding aceelerator linkage. One other thing that might sound strange is check the floor mat by the gas pedal. Sometimes gets jammed.

Feb 20, 2009 | 1992 Cadillac DeVille

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Car wont idle well


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