MY

2006 Cadillac CTS

Tiny

albert capobianco

June, 4, 2011 AT 4:03 PM

When I first start up my 2006 Cadillac CTS, the vehicle runs rough and I hear a rattling sound. After a while I drive the car and it seems find. There must be a problem, but I need some type of an answer before I bring it in to Cadillac for repairs.

FOUND 4487 RELATED QUESTIONS

Running Rough

27 ANSWERS
34 IMAGES

Idles Rough/changed Ects

37 ANSWERS
3 IMAGES

1 Answer

Tiny

hmac300

June, 4, 2011 AT 11:14 PM

It could be a vacuum leak as the computer takes over when it's almost warmed up. Check for a vacuum hose off or a split one or broken one. Alot of them are plastick andcan be repaired at the break with a pieceo fhose going ove r it. The rattle may be the heat shield has broken loose over the converter. You'll have to crawl uner it and look.

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