If you can rotate it 90° at the longest length, it's too loose.

 

It's true. The 4.0 likes a solid belt.

What kind of belt did you get, open

 

Tighten until it doesn't make noise anymore. Remember it will stretch and need some more tightening after a week or two. Too tight will shorten the life span of the pulley bearings.

 

Just as a note.. If it is to tight, your alternator bearings will die soon as well as damaging the rubber part on the vibration damper.
If you go on outings and see cherokees that have a squeaking belt that is really tight. It is caused by the vibration damper that "crawled" towards the timing belt cover therefore is no longer lined up properly. Some keep tightning it in the hope of stoping the squeek and eventually, the belt and the vibration damper start wearing a hole right into the Timing belt cover.

 

I guess I should have elaborated more, especially since there are more novice people here. I didn't mean solid as in no flex or movement.

 

I mean is it easy to pull or do you really have to Yank it

 

Yank it and don't be a sissy.

 

Hard for him to do.

 

Are we still on that horn button? Just pull the damn thing until it comes off......

 

Its hick..... you have to tell him 1,856,354 times before he gets it.

 

I told you a million times not to exaggerate....

 

Edited by odgreen. One more of these you lil turd you will get a vacation from the site

 

Is that a question or a statement? Lmao

 

Isn't the auxiliary cooling fan supposed to be on when the AC is on regardless of engine temp??

 

Yea