Replaced the heads on my 2000 Malibu . It idels rough and the exhaulst suxs back in a little. What can cause this. What can I do to fix it ?

Asked by Oct 01, 2012 at 07:41 AM about the 2000 Chevrolet Malibu Base

Question type: Maintenance & Repair

4 Answers

254,055

Recheck all your hose and electrical connections. Sounds like a vacuum leak.

2 of 2 people found this helpful.
34,945

Do a compression test on all the cylinders. If the exhaust is "sucking back in" that would be a dead exhaust valve but there would be alot more going on than the little you described.

1 of 1 people found this helpful.
85

might be as simple as a compromised O-2 sensor, did you use any sealers on the e-manifold instalation? many people also use antiseaze (debatable I know) for the studs and nuts, if it were to get into the manifold on instalation it might cause falure of the exhaust gas sensors

34,945

I read that Q wrong I thought it said u were going to not that you already did replace the heads...

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