Thread: Super charger chirp (video inside)

I'd just assume that when the belt is off the noise will be gone.

So I'd start with a new belt first, then go from there.

If the new belt does not fix the issue, then stat looking at a pulley issue. I don't see this problem being related to the supercharger itself because you wet the belt and noise went away.

thats nothing to do with the sc. your lubing the belt.

take the sc belt off, then spin the idler's and tensioner pulleys by hand, your looking for one thats not smooth spinning. if those are ok, then take the other belt off and do the same.

if let go the pulley will explode, the belt will break and most of the time take something else with it.

those pulleys are 20 bucks brand new.

Originally Posted by drewhanover

The only reason i don't think it's a belt is because the lubrication i'm using is belt dressing.. I feel like that would take away squeaks to do with the belt

Also just putting this out there, I've used napa belt dressing on a belt that squeaked, and it made it 4 times louder and much more intense. A new belt fixed that issue, so the dressing didn't work in that situation at all.

Belt lube never worked for me... Ended up just forking over the $15 and just getting a new belt.

I agree with the other guys above.. Start with the belt then go from there.

i had a bird chirping under the hood too. took the sc belt off and the tensioner pulley would barely spin. new pulley, no more chirp.


when you spray a belt the way you did, your wetting both sides of the belt, so any pulley that was bad the belt is now sliding over it due to loss of friction.

Did you take the belt off and start engine?

I agree as well... 90% sure it's either idler or tension pulley... For the $12-15 each, just replace em all... Or this happens, notice the difference between the old (left) and new, lol.

Take a peice of sand paper and place it against the belt under while its running and it should go away if its the belt, just dont take your hand off or just replace it.

i say new belt then new tensioner pully/ assembly if continues. i had the same sound in my 04 n/a had to replace the tensioner assembly cause i stripped it and after that had no isues ever agian.

That means it's the belt then, you took off a little surface layer of dry rotted rubber.