Shake on idle until throttle applied
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Northstar Engines and System Technical Discussion Discussion, Shake on idle until throttle applied in Cadillac Engine Technical Discussion; Hi, My 98 STS has started to shake on idle (rev is not stable). When I apply a little throttle, ...
  1. #1
    mor10am is offline Cadillac Owners Member
    Automobile(s): Cadillac
    Join Date
    Apr 2007
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    1

    Shake on idle until throttle applied

    Hi,

    My 98 STS has started to shake on idle (rev is not stable). When I apply
    a little throttle, or start driving the shaking will stop. After I stop, and put
    the car in P to idle again, the shake is gone...

    Any ideas?

    Thanks,
    Morten

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  3. #2
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with DTS floor shift)
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    Jun 2004
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    Woodstock Ill.
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    Re: Shake on idle until throttle applied


    Sticking EGR valve, plugs, wires. Any codes stored?

  4. #3
    99Classillac's Avatar
    99Classillac is offline Cadillac Owners Enthusiast
    Automobile(s): Ex-99 Deville owner, Now-04 DTS and 05 DTS. ZX6R Pilot too.
    Join Date
    Nov 2005
    Location
    Upper Marlboro, MD
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    31
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    822

    Re: Shake on idle until throttle applied

    Probably sparks plugs or plug wires, or coil packs.

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