2003 DeVille DTS-rough idle at warmup problem solved
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Cadillac DeVille 1985 to 2005 including:
1985-1992 Fleetwood, 1993 Sixty Special, All FWD Forum Discussion, 2003 DeVille DTS-rough idle at warmup problem solved in Past Cadillac Vehicle Discussion; I was going to post the question first, but diagnosed and fixed it instead. I recently had very rough idle, ...
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    chev600 is offline Cadillac Owners Member
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    2003 DeVille DTS-rough idle at warmup problem solved

    I was going to post the question first, but diagnosed and fixed it instead. I recently had very rough idle, at warmup, in gear. It was the coil packs.


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    basscatt's Avatar
    basscatt is online now Cadillac Owners 10000+ Posts
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    Re: 2003 DeVille DTS-rough idle at warmup problem solved

    Quote Originally Posted by chev600 View Post
    I was going to post the question first, but diagnosed and fixed it instead. I recently had very rough idle, at warmup, in gear. It was the coil packs.
    -----------------------------
    that is becoming more and more common -
    particularly the rear bank - might be a heat-related thing -

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