[D52LINY]

Hello Everyone, I need your help. This annoying noise just started in my 2001 GT. IT sounds Like I have Marbles in a Aluminum pan underneath my car. IT doesn't happen all the time, just most of the time. When I rev the car up the sound doesn't get any faster so I know it's not the engine or crank...I'm thinking it might be the cats. Sometimes it's embrassing sitting at a light, everybody is wondering where this clanking is coming from. any ideas would be appreciated.

[tripleblack]

Originally Posted by D52LINY

Hello Everyone, I need your help. This annoying noise just started in my 2001 GT. IT sounds Like I have Marbles in a Aluminum pan underneath my car. IT doesn't happen all the time, just most of the time. When I rev the car up the sound doesn't get any faster so I know it's not the engine or crank...I'm thinking it might be the cats. Sometimes it's embrassing sitting at a light, everybody is wondering where this clanking is coming from. any ideas would be appreciated.

Could well be your cats starting to break up - or some stones trapped in the heat shields - or maybe some other damage to the exhaust.

Take it in to your muffler shop and have them give it the once over.

If your cats ARE gone, good time to consider a new mid-pipe with high flow cats. Upgrade rather than just repair.

[02silvergt]

+1 for cats. Happened to me and scared the crap out of me when i first heard it.

Dan

[therat1989]

This just happened to me this weekend as well...but my sound went away... Weird.

[rj8806]

Originally Posted by tripleblack

Could well be your cats starting to break up - or some stones trapped in the heat shields - or maybe some other damage to the exhaust.

Take it in to your muffler shop and have them give it the once over.

If your cats ARE gone, good time to consider a new mid-pipe with high flow cats. Upgrade rather than just repair.

+2.....Cats are on their way out. That is the "classic" sound of a cat going bad. Next you'll start smelling a rotten egg smell if it goes too long.


Richard
Tech Support
Keisler Engineering
Tremec TKO & T56 Transmission Systems