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Squeal with heater on

2K views 2 replies 2 participants last post by  Rpkittle 
#1 ·
My 1997 4.0 5-speed will squeal when I start the car with the heater already turned on. My jeep does not have a/c so I wasn't exactly sure why it would squeal. Does the air coming out of the vents have its own blower motor? or does it use some accessory on the serpentine belt?

I went to autozone and Napa, and they both said they do not have any tool to help me measure the tension on the belt. Napa had something similar, but the guy said it would only work on the "v-belts".

One more question. I know I am suppose to loosen the bolt for the pulley, and then make the adjustments on the 15mm bolt to the left and down from the PS pump. Do I then re tighten down the pulley?

Thanks!
 
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