Well I have a 1998 SC300 and noticed that when I turn off the car, the exhaust makes cracking noises like the metal is contracting. Is this normal on SC vehicles? It doesnt matter how long I drive the car, it will make that niose..It seems to be a little too loud to be normal. Any of you have this problem/sound?

Oh BTW, the exhaust system is stock along with everything else.

 

dont be alarmed... its just the cats cooling down. happens to every stock exhaust SC that i have ever seen or owned.

 

Yeah it sounds like Rice Krispies but 10x's louder.

 

Chanh!
muahahaha
15 posts and this is the first one i've seen

 

yea, mine is pretty freaking loud too, 98 sc400

 

I have solved that problem 100%

1.) i installed some test pipes (got rid of the cats)
a. now this did help the crackling, but not all of it, id say around 45%

2.) remove every single WORTHLESS heat sheild on the exhaust system, then reinstall with those metal zip tie things used for intakes and pipes and stuff.
a. this got rid of A LOT of the noise and made me very happy!

good luck

 

lol, sounds like the crackling was really getting to u man.

 

Yeah its fine. Just sounds painful to your car but nothing to worry about.