weird noise in my engine bay

ONLY for ADVANCED technical discussion about the 240sx!
User avatar
chalmer240sx
Posts: 131
Joined: Thu Dec 04, 2008 3:32 pm
Car: 1990 nissan 240sx

Post

i drive a 1990 nissan 240sx and last night i heard this really weird noise under the hood and after i started to let the clutch out. the noise only does it on decelleration im not sure what it is. any ideas? its a fast rattleing noise


Ignoble
Posts: 25
Joined: Sun Nov 02, 2008 9:32 pm
Car: Onevia, Sileighty

Post

Might be something loose? Heat shield on catalytic converter rattling due to vibrations? Transmission gears vibrating due to thin gear oil? Throw out bearing gone bad? Not too sure but just throwing out stuff.

Vegascorbin
Posts: 732
Joined: Sat Nov 24, 2007 9:56 am
Car: 1990 240sx dirt track race car

Post

Not much to go on but I have to throw out the idea of timing chain and guides.

Have you done anything to the engine lately?

User avatar
chalmer240sx
Posts: 131
Joined: Thu Dec 04, 2008 3:32 pm
Car: 1990 nissan 240sx

Post

we figured out what it was. my fly wheel fell off due to the fact that when we did the 5-speed swap we used the automatic flywheel bolts.

thanks for helping though

IF U DO A FIVE SPEED SWAP DO NOT USE AUTOMATIC FLY WHEEL BOLTS

IT WILL COME OFF AND POSSIBLE STIP OUT THE THREADS IN THE CRANK CASE


Return to “240SX Technical Forum”