Need some direction

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Cadillac DeVille 1985 to 2005 including:
1985-1992 Fleetwood, 1993 Sixty Special, All FWD Forum Discussion, Need some direction in Past Cadillac Vehicle Discussion; Hi guys I've got an 1994 Cadillac Deville with 132,000 miles and last week the gas pedal started pulsating when ...
  1. #1
    damondknapp is offline Cadillac Owners Member
    Join Date
    Jan 2013

    Need some direction

    Hi guys I've got an 1994 Cadillac Deville with 132,000 miles and last week the gas pedal started pulsating when I turned off the ignition. I visually saw that the Idle Speed Control moving in and out. So I just replaced it and I still have the same problem. I'm going to go to my last resort of disconnecting the battery for a day to see if I can't manually reset the computer. But wondering what to do if that doesn't work. Please help she's been a great car for me. Been so happy with her I went out a bought a 1995 Cadillac Deville.

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  3. #2
    Jfarr is offline Cadillac Owners Member
    Join Date
    Jun 2013

    Re: Need some direction

    They're going to ask you if you've pulled the codes, what they are and their definitions. (^Sticky^)

  4. #3
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with DTS floor shift)
    Join Date
    Jun 2004
    Woodstock Ill.

    Re: Need some direction

    I am not sure, but I think it is just setting itself up for the next start. I remember my '92 doing that and it never gave me any problems. Unless you are having an idle problem, I wouldn't worry about it.

  5. #4
    basscatt's Avatar
    basscatt is online now Cadillac Owners 10000+ Posts
    Automobile(s): two 02 DHS's, 03 SLS, 95 Sedan DeVille, 89 Coupe DeVille
    Join Date
    Feb 2004

    Re: Need some direction

    ALWAYS - check for Diagnostic Trouble Codes -

    if you don't know how - go here and read the ENTIRE post -

    if you have any codes - post them here -

    I suspect a problem with the TPS - Throttle Position Sensor -
    either out of adjustment - or defective -

  6. #5
    carnut is offline Cadillac Owners Master
    Automobile(s): 1988 Allante' (sold), 1984 Eldorado, 84 Sedan DeVille
    Join Date
    Feb 2003

    Re: Need some direction

    The ISC needs to be adjusted once installed. It must be retracted thru on board diagnostics then a measured clearance is set by screwing in the nose switch shaft. That why you need a factory manual! The ISC should only extend just prior to start up and retract as the car is shut off.

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