Question about 2002 Cadillac Deville

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I have a 2002 Cadillac deVille with 120k miles. When the engine is warm, it bucks and surges during idle. It runs fine asl long as we are moving. But, when I stop at a light the engine will buck and stall. This only happens when the engine is warm. It runs beautifully from cold start until the temperature gauge/graph is up about 1/3 of the way. It never overheats. the gauge/graph never goes above the halfway point.

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Check for inlet manifold for leaks, also check cold start injection ( may be leaking)

Posted on May 17, 2011

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Posted on Jan 02, 2017

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