strange ticking noise when turning car off

[ivatu]

after i turn off the car theres a ticking noise i think it might be the hot metal from the exaust but what do you think?

 

[bomper04]

too vague..you said it's coming from the exhaust?

 

[knochgoon24]

I have that sound too. It's the hot exhaust pipes contracting as they cool down.

 

[bomper04]

hm, i learned about something like this in class like a few years ago..a biology teacher was explaining the ticking noise coming from the block from the expansion of metal due to heat..but i don't know about exhaust. i'm probably wrong .

 

[destruckeclipse]

More then likely it is just from the car cooling off after a drive, happens on just about every / any car especially newer cars or newer exhaust from my experiences. Should be more of a pinging / clanking though instead of a tick.

 

[ivatu]

well something like that^^^^^^^^^ then

 

[proto2]

As the others said it's just the car cooling down after driving. It's nothing to worry about unless it's doing it while you're driving.

 

[back2dsm]

My car does the same thing. I've never had another car do that. And this is my third dsm...

I was thinking maybe my downpipe is a different material than the rest of the exhaust?

 

[DSM1G90]

It's just the 'ghost' that is in your car banging on the hot surfaces saying 'thank you in letting him cool down' after a hot ride...

 

[DroopYeyeS]

Another possible solution would be the ecu. I see in your profile this should be a '95 n/t. My mothers '95 does this after you shut the car down. Open your hood right after you shut down, and listen to the ECU ( on the drivers fender ). You should hear it buzzing like crazy. If this isn't happening, Im gonna have to go with everyone else, cool down of metal.

 

[Ice Racer]

+10 for exhaust metal cooling

 

[Defiant]

hm, i learned about something like this in class like a few years ago..a biology teacher was explaining the ticking noise coming from the block from the expansion of metal due to heat..but i don't know about exhaust. i'm probably wrong .

That's why we have fields of study such as biology for people like that to immerse themselves in. If you ever have noise from a block, it's from a dead engine. 250°F isn't enough to get iron to tick.

Ever pop the hood of a running DSM? Even without a turbo, you'll find the exhaust manifold glowing.

Your noise is most likely from the heat shroud around the cataclysmic diverter. Ignore it.