My car has a real bad knock, but has full oil. Plus when I turn the switch, the lights come on but it doesn't say nothing.

Asked by Sep 22, 2015 at 09:34 PM about the 1997 Pontiac Grand Prix 4 Dr GT Sedan

Question type: Maintenance & Repair

3 Answers

43,175

You have a rod knock. Don't know why but that is what it is. Not Good.

19,755

could be anything..even a broken valve spring to a ac copressor...a rod knock? do you push it hard?

4,235

Rod or other valve related problem is likely. You need to address this quickly if you want to continue to use the car reliably. Diagnosis and fix is not that difficult for any shop but pick one that has a good reputation in the area.

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