Chrysler's fan belt squealing w/ 5.2L v8 engines

jeep
belts
fans

#1

1993 Jeep Grand Wagoneer 5.2 V8 - can’t stop the fan belt squeal. My mech. has used every brand. Has 5 customers w/this engine and SAME problem. One is a Dodge Truck…flip the belt and get 3 days of quiet. Help He’s stumped and frustrated.


#2

Are any of the pulleys glazed?

Are the belt tension pulley(s) in good condition? A weak one will let the belt slip at different times.

Sure it’s a belt squeal? Worn pulley bearings can cause a squeal too.

Are all the pulleys in alignment? Use a straight edge to check.

While the belt is off, manually check each pulley by rotating the pulley and at the same time force it sideways.


#3

What is the installed tension as measured with a belt tension gauge?


#4

I will bring up these suggestions to my mechanic today. We’ve touched on most of these but, maybe not the worn pulley bearings. Will ask @ using the straight edge tocheck the pulley alignment too. It’s a tight serpentine belt with the v-grooves. Replaced a water pump 7-9 months ago. Let’s see what happens.