Why is my car making this sound???

Asked by Jun 14, 2017 at 11:58 AM about the 2006 Pontiac Grand Prix GT

Question type: Maintenance & Repair

When I first start my car it makes this like putting
sound or maybe even a knock ( almost like a put
put tractor ) after driving a couple miles you can
hardly hear it if at all. Also my car has a super
charger if that makes any difference and only about
130,000 miles. I have a video but it won't let me
post it.

1 Answer


You may have an exhaust leak.

Your Answer

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