Engine vibrating roughly while at stop

Asked by Aug 18, 2017 at 12:00 PM about the 2008 Chevrolet Impala LS FWD

Question type: Maintenance & Repair

I just brought an 08 Chevy Impala LS and
only had it for 3 weeks and now it's
starting to vibrate roughly while and drive
when I'm at a stoplight so please tell me
what is happening

1 Answer

37,855

You either have a broken motor mount or a bad misfire. Running at a higher RPM can make misfires less noticeable or the misfire goes away, but when at idle it becomes pronounced again. A tune up may take care of the misfire, you can also stop in at any parts store and have the OBD trouble codes read for free, there may be something else going on causing a misfire. As for engine mounts, you have to visibly inspect them, that might be better left to a professional.

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