Nissan 240SX Forums banner
1 - 17 of 17 Posts
is it the lights on or key in ignition ding or ding from under the car? if its from under the car its most likely the cats. thats what they do all they are is REALLY hot catalyst bouncing around in there.
 
If you happen to open the door before you remove the key from the ignition... It will make a ding ding noise as Fordtech stated. Same w/ the lights on. The cat made more of a popping noise in my case.
 
Discussion starter · #4 ·
It's not the noise from not removing the key, or forgetting to turn off the lights. It's from under the car. Is this normal? It sounds like something is getting sizzled :eek: If it's the cat that's not really a big deal right?
 
if u have a stock exhaust, it makes sounds as it cools down, cuz when its hot its expanded n when it starts to cool down it starts to shrink back, well i used to have that on my civic, but i dunno about urs, i noticed it went away when i put an aftermarket exhaust on
 
I used to have that sound as well until I removed my cats. Now it no longer does it. :p
 
Just a little bit.
 
OMG its the cats. as i said before when the catalysts inside get hot the bounce all around. and when you turn the car off the cats are still hot. so therefore they are still bouncing around!! WOW
 
Mine used to do it bad when before I took my cats off. Now that they are off I don't hear it anymore. So cats get my vote.
 
1 - 17 of 17 Posts