User 12822

iTrader: (1)

After driving my car for a while and turning it off within any time between 2 to 10 minutes later i hear an extremely loud bang come from under neath the car. ive been pulling the code for my cat for about a year now but never got it fixed because my mechanic said not to worry until i needed the car inspected.

what the hell could the banging noise be and what does that mean? im assuming it has something to do with the cat...

irish44j

iTrader: (38)

if the car is off, the only thing it could possibly be is an exhaust component making noise as it cools and contracts....if there is already suspicion on the cat, I would replace it first and go from there...

Maxgig

iTrader: (5)

I had a 90 Saab 9000S a while ago and when my cat got plugged up it turned red hot and made a banging noise when it started to cool off. I eventually had to replace it.

jasonmax

iTrader: (2)

back fire?
EVAP problem?

User 12822

iTrader: (1)

yeah thats what i figured. can the car get damaged by that?