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Thread: Idle adjustment

  1. #1
    Join Date
    Oct 2010
    Location
    Lake Wylie, SC
    Posts
    37

    Idle adjustment

    Is there a way to manually adjust the timing on a 94 SC? The previous owner had installed an OD pulley, not sure the percentage, which I think makes the car idle a little low. It idles around 500 when in drive. It will dip down a little lower and stumble when I am parking or backing up. Thanks.

  2. #2
    Join Date
    Apr 2002
    Location
    Madison, Ohio
    Posts
    17,683
    That has nothing to do with either the pulley or the timing. Either something is dragging the motor down (like bad supercharger bearings) or the MAF is not reading correctly. Try cleaning the MAF.
    Quote Originally Posted by Miller View Post
    Ya thats why i tape mine down. People think its bc i dont have a moonroof seal (which is true) but its really to keep my roof from ripping off .
    Email me here.

  3. #3
    Join Date
    Jul 2007
    Location
    South IL
    Posts
    1,574
    when using an auto the idle is supposed to rise slightly when a gear is engaged. is it a drag like you can tell there is a power loss or is it just a very low idle. if just a low idle then check all of your electrical connection to the tranny. the main wire harness is your target. it runs from the tranny to right in-front of your ash tray under the trim in the cab. if not that then there is a possibility of the pick up switches inside your tranny have issues. i have little experience with the auto's so i cant really tell you anything about the insides of the tranny.

    when i temporarily converted my car to an auto, the pc was not for an auto and once a gear was engaged it to would dip to around 5-600rpm. sometimes it would even stall. im not sure how you could check for this other then pulling the pc for a look but there is the possibility that it might have a manual pc in it to.

  4. #4
    Join Date
    Aug 2002
    Posts
    3,669
    Quote Originally Posted by XR7 Dave View Post
    Either something is dragging the motor down (like bad supercharger bearings) or the MAF is not reading correctly. Try cleaning the MAF.
    This is interesting. Bad bearing can drag the car down to stall? Is there a way to detect if the bearings are bad BEFORE they start to make the grinding sound? Thanks Dave, really interesting info.

  5. #5
    Join Date
    May 2002
    Location
    Dallas, TX
    Posts
    5,753
    Jeeze.. how long have you all been here? Hows that passenger side engine mount looking.. And for the 100th time.. NO.. Im NOT joking. Do a search on "motor mount idle" and read up on the subject.

  6. #6
    Join Date
    Oct 2010
    Location
    Lake Wylie, SC
    Posts
    37

    Idle

    The car runs great other than at the times mentioned earlier. I have cleaned the MAF recently, but it can't hurt to it again. I have been told that I will need motor mounts very soon. Transmission seems to shift fine. I have disonnected/reconnected all the plugs under the console panel during other things and they are secure.

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