2002 Pontiac Montana Rattle while under light load

2002 PONTIAC MONTANA
200,000 MILES
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JAMES DEAN RAPER
  • MEMBER
  • 1 POST
Has a rattle in eng/trams/or exhaust only while driving under load it will not do it sitting still or power braking does not burn oil transmission and oil are serviced as required seems to bee like a chain rattle or exhaust rattle I don't here it while cursing only under small load or heavy acceleration
Nov 17, 2013 at 11:09 AM
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CARADIODOC
  • CAR REPAIR CONTRIBUTOR
  • 34,308 POSTS
Try banging on the catalytic converters with a rubber hammer.

There is a tool you might be able to borrow or rent from an auto parts store that borrows them called the "Chassis Ear". It is a set of six microphones, a switch box, and headphones. You clip the microphones to suspect points, then drive around while listening with the headphones. You can move the microphones around to zero in on the source of the noise. Be aware that many mechanics have never seen or even heard of this tool. Suspension and alignment mechanics use it to find rattles, squeaks, and other noises.
Nov 17, 2013 at 12:10 PM
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