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edpontiac91 · 01-17-2008, 01:42 PM

Sounds like it might be your Cat Converter starting to break apart. There is a honeycomb material packed inside of it, and when they start to go bad, it can break apart and make a rattling sound. Get it checked out quickly, because if some of those pieces come loose and get stuck inside your exhaust pipe, it will cause your car to overheat due to back pressure building up in the pipe! No big deal, your car will catch on fire and then you'll get a new one that doesn't have that problem.

01-17-2008, 01:42 PM	#3
edpontiac91 Join Date: Aug 2007 Location: Piscataway, N.J. Posts: 1,729 iTrader: (16)	Sounds like it might be your Cat Converter starting to break apart. There is a honeycomb material packed inside of it, and when they start to go bad, it can break apart and make a rattling sound. Get it checked out quickly, because if some of those pieces come loose and get stuck inside your exhaust pipe, it will cause your car to overheat due to back pressure building up in the pipe! No big deal, your car will catch on fire and then you'll get a new one that doesn't have that problem. __________________ 1991 FORMULA 350-GONE BUT NOT FORGOTTEN 1 of 1,197 with L98 Option/13.79@100 mph 1994 25th ANNIVERSARY TRANS AM GT -1 of ONLY 2,000 made/ Only 128 made with a *HURST* 6-Speed Manual and 91 with T-Tops and Compact Disc/ K & N Filtercharger/Magnaflow Performance Muffler/Air Foil- ORIGINAL MINT Arctic White Ultra Rare SURVIVOR. DAYTONA 500 PACE CAR Decal Kit! SOLD: 1989 Turbo T/A in 1991 it ran 12:18@115 mph Last edited by edpontiac91; 01-17-2008 at 01:45 PM.