Loud chirping at idle and gets faster on acceleration

[Wyatt Reitzloff]

Hey guys so I have a 2001 Jeep Wrangler tj and I’ve been having a very annoying chirping/squealing sound coming from what I assume to be one of the pullys. I got a new belt, replaced the tensioner, and idler pully still doing the same annoying sound. Thinking maybe alternator pully? Any help would be greatly appreciated. Also the chirping gets louder the higher you go in rpms.

 

[Tomcat]

You might want to look at the OPDA.

 

[taylormade73]

You might want to look at the OPDA.

X2... Although it would be the camshaft synchronizer. Not the opda. Different design

 

[oldtimer]

Take a long screwdriver and touch it to the alternator and listen through the handle. If that’s the culprit, your hear it. Same with the a/c compressor.

 

[hardtopper]

I would guess it's the alternator itself, but check that the new belt isn't glazed from slipping.

 

[Steel City 06]

Yank the belt off and turn it on for a few seconds. The dash will probably light up like a Christmas tree but it shouldn't harm anything if you only do it for 10-15 seconds or so.

If it continues without a belt installed then you know it's not related to the belt drive.