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Thread: Vibrating seville.

  1. #1
    kingjay's Avatar
    kingjay is offline Cadillac Owners Member
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    Hey guys so recently my car started vibrating. It's weird because I can hear it more than I can feel it. I also feel like it's stronger once put in gear (reverse or drive) the car has new ac delco spark plugs, new wires all 4 new ignition coils, what could be causing the vibration? A motor mount? I haven't ran the codes just yet but I did so a while ago and I don't really remember seeing anything that would be the cause of this. Any help please? I'm just really trying to get this car to the best shape I can get it and the vibrating is annoying and kind of embarrassing (lol)


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  3. #2
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
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    Re: Vibrating seville.

    What's "vibrating" ??? The steering wheel, seats, body at speed or the engine at idle or upon acceleration ?

    Did you connect the coils/wires/plugs correctly ? Are the ICM ground wire terminals cleaqnm and tight ?

  4. #3
    Ranger's Avatar
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    Re: Vibrating seville.

    Vibration is usually caused by a rotating part, tire or wheel imbalance is the most likely cause, but a bad front motor mount has been know to cause this.

  5. #4
    basscatt's Avatar
    basscatt is offline Cadillac Owners 10000+ Posts
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    Re: Vibrating seville.

    recently my car started vibrating.
    It's weird because I can hear it more than I can feel it.
    I also feel like it's stronger once put in gear (reverse or drive)

    I believe you might be confusing the "audience" with your terminology -

    VIBRATING usually refers to rolling-related problems -
    out of balance tires - bent wheels - etc -
    and judging by your description - that is NOT it -

    if your "vibration" is happening at idle -
    you have a misfire -

    what can cause it? -
    vacuum leaks - dirty throttle body -
    defective new parts - LOTS of things -

    check for codes -

  6. #5
    kingjay's Avatar
    kingjay is offline Cadillac Owners Member
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    Re: Vibrating seville.

    Sorry guys. Well to me it feels like it's vibrating, it only happens at idle. When I'm in park it happens also when I'm waiting at a red light or something. I checked the codes and there is no misfire code which is P0300 right? or something like that. Anyways also I didn't do the coils,wires,plugs myself so I'm not sure, but I mean when they were first done the car ran so smooth it was amazing and now all of a sudden this is happening.

  7. #6
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: Vibrating seville.

    If it's at idle you can rule out wheels.

    A slight misfire will not set a DTC. When my '97 Deville had a misfire I had to brake torque it to 2000 RPM and hold it for a few seconds before it threw the P0300 and lit the MIL.

  8. #7
    kingjay's Avatar
    kingjay is offline Cadillac Owners Member
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    Man this sucks, I was hoping it wasn't a misfire but now I'm thinking it is, what do you guys think could be causing this?

  9. #8
    basscatt's Avatar
    basscatt is offline Cadillac Owners 10000+ Posts
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    Re: Vibrating seville.

    Quote Originally Posted by kingjay View Post
    Man this sucks, I was hoping it wasn't a misfire but now I'm thinking it is, what do you guys think could be causing this?
    -------------------
    like I already said -
    COULD BE a bunch of stuff -

    coil - wire - spark plug - fuel injector - vacuum leak - dirty throttle body -

  10. #9
    kingjay's Avatar
    kingjay is offline Cadillac Owners Member
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    Re: Vibrating seville.

    Quote Originally Posted by basscatt View Post
    -------------------
    like I already said -
    COULD BE a bunch of stuff -

    coil - wire - spark plug - fuel injector - vacuum leak - dirty throttle body -
    Alrighty, well thanks Basscatt and to the rest of you. Tomorrow I will give it a good look and be back with more info


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