i have a 2000 chevy blazer and it started making this bad rattling noise and i assumed it was coming from the catty converter because the vehicle has almost 200,000 miles on it anyway and soo after about 2 weeks after this started my sister borrowed my vehicle (the blazer) and took it 4-wheeling without me knowing and f*ucked up the transmission well the garage said when it took it in for the tranny repair it was just the valve body because of the Service engine light code and they also said that they thought the noise was coming from the transmission and that the tranny wouldn't last long making that noise but the transmission was fine b-4 she took it 4-wheeling in fact just replaced (it was making the noise b-4 she srewed it up...) do u think the noise is coming from the tranny or the catalytic converter? it does it in all gears sometimes and sometimes not... it REALLY hard to tell where it is coming from... i had the fluid & filter recently changed and it was normal red not burned..
2007-12-11 08:17:03 · 3 answers · asked by Anonymous in Cars & Transportation ➔ Maintenance & Repairs
when car is cool engine off bang on the exaust with the side of your fist if you hear rattle its in there somewhere loose heat shield would be my guess
2007-12-11 08:36:26 · answer #1 · answered by mobile auto repair (mr fix it) 7 · 2⤊ 0⤋
Probably your converter, the honeycombs inside there like to flake off. Grab hold of it and shake it, or just beat on it with your hand, and if it rattles, that's your problem. Check your front end, particualry your sway bar links, althought this sound is normally a clunking noise.
2007-12-11 08:21:37 · answer #2 · answered by Anonymous · 1⤊ 0⤋
Check engine light should come on and Code will be P0420.That is bad catalytic converter.
2007-12-11 08:22:12 · answer #3 · answered by polkan47 4 · 0⤊ 0⤋