Serpentine belt problems.

[Ray Doz]

My 1993 Jeep Cherokee sport serpentine belt keeps slipping off towards the motor everytime I start it. I've tried everything I know. But the only other thing I can think of the new belt I bought isn't wide enough. What do you think it could be?

 

[RCP Phx]

It a alignment issue with something not square/true.

 

[Ray Doz]

I've done a alignment check and it's aligned right.

 

[RCP Phx]

Have you checked the harmonic balancer for movement?

 

[Ray Doz]

Yes it's all good

 

[Bent]

ALL the bolts on the power steering pump tight?

 

[Anak]

How did you check the balancer?

It might help if you could get a second person to start it while you watch.

This is not a common problem. Something is definitely amiss. It may appear that everything is aligned, but I would bet something is shifting its position at start up. The harmonic balancer would be my first suspect. At this age, if it hasn't already been replaced then it is due.