rattling in my exhaust

xvr843 · Post by **xvr843** » Sat Jul 23, 2011 1:35 am

Like when i accelerate at times, i hear a rattle in my exhaust. i replaced the muffler and check the heat shield it still rattles

dangrus4060 · Post by **dangrus4060** » Sat Jul 23, 2011 2:49 am

Most likely its your catalytic converter...the honeycomb innards have come apart.
Thats what happened on both of my bonnies. Get a new one off ebay....its a lot cheaper.

reb · Post by **reb** » Sat Jul 23, 2011 11:08 am

Try crimping the metal around the perimeter of the heat shield that covers the cat.

willwren · Post by **willwren** » Sat Jul 23, 2011 11:12 am

Jack one side of the car up (use jackstands) and kick the cat side to side and up and down.

xvr843 · Post by **xvr843** » Sat Jul 23, 2011 11:40 am

Thanks you guys, my car is stright pipe, could it be the resonator?

renchjeep · Post by **renchjeep** » Mon Jul 25, 2011 1:09 am

Could be resonator or muffler. Could also be the thin metal heat shields under the car that runs pretty much the length of the exhaust under the car, between the exhaust piping and the floorboard. The latter was the problem on my 94 SE. Look for loose bolts on the heat shield, or contact between the exhaust pipe and the heat shield. I had both problems.

sonoma_zr2 · Post by **sonoma_zr2** » Mon Jul 25, 2011 7:19 am

Could also be the down pipe.

The_Maniac · Post by **The_Maniac** » Mon Jul 25, 2011 2:12 pm

My Monte had a problem with the resenator (more then once). I don't know if the Bonnies have them. If they do, Willwren gave you the best advice (he was referencing a CAT, but same idea applies). I got the Monte in the air and with the palm of my hand slapped the parts of the exhaust concluding with a bad resenator.

1oldman · Post by **1oldman** » Mon Jul 25, 2011 10:50 pm

Did it start immediately after having an alignment, or any work done to the suspension, or engine/transmission mounts replaced? If so, it's a heat shield. Took two mechanics and me two years to find it. Actually, it was me crawling around under the car till I found it. - BC

xvr843 · Post by **xvr843** » Sat Jul 30, 2011 2:58 pm

Started a week after i removed my cat

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rattling in my exhaust

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