Supercharger Chirp

[XDkyleXD]

When I start my Lightning I always hear a chirping noise coming from the supercharger. Since Ive never been around other Lightnings I do not know. Is this normal.
My Lightning is mostly stock with 120k on the clock.. Should I just rebuild the front drive of the supercharger or the whole thing?
Also anybody have a write up for a DIY port job?
Thanks!
XDkyleXD

 

[Outlaw99]

i dont recall a "chirp"

can you make a soundbyte?

 

[XDkyleXD]

I can give it a shot tomorow.. Its just a high pitched chirping noise when I first start it.. I assumed it was the bearings in the supercharger

 

[Dusten]

or your belt is shit housed? How long has it been on there?

 

[XDkyleXD]

Ive only had the truck a few months but when I put the new alternator on it seemed to be just fine but Ill check into it tomorow

 

[fishin-nole]

Probably and idler pulley.

 

[1998Cobra]

Mine does that also, but on mine its just the belt squeaking when I first start it, then it goes away. I havent got around to changing the belt but I will eventually

 

[FireGuy]

Loosen the supercharger belt when it is cold and turn the idlers and tensioner pullies by hand, should spin freely, any catching or stiff turning = dry/worn bearing.

While that belt is loose, do the same for the accessory belt, tensioners, idlers, and alternator. I have found that the alternator is usually the source of the chirp when you first start as it is under load to recharge the battery. The alternator location sucks, for lack of a better word, it is in the hottest location in the engine and can dry out bearings and fry diodes and regulators quickly.

Look closely at the belts, if the backside is extremely shiny, could be the cluprit.

Good luck with the hunt.