Serpentine belt slides off of the fan.

Asked by Jason May 11, 2014 at 08:04 PM about the 2006 Dodge Dakota ST Quad Cab RWD

Question type: Maintenance & Repair

My truck started to overheat yesterday and so I thought it was a problem until I opened the hood. Noticing the belt has slid off the fan I reassembled the belt and turned on the truck to make sure everything was in order. The belt then slid off 1/4 of the fan. Is there something that would cause this?

2 Answers

199,605

How old is belt? Check all idler and tensioner pulleys. Check all acc for loose pulleys and loose mounting bolts .(ac, alter, water pump, fan, ect).

2 people found this helpful.
20

Those are obvious. The tensioner and idle pulleys do fail. If the belt comes off, the most likely culprit is the water pump. See if the fan moves up and down or side to side. It only takes a little movement for the belt to come off at the fan. My fan pulley is smooth. I have seen some with ridges on the outside edges that will help it stay on. In just discovered that the water pump shaft is loose although it is not leaking coolant yet.

2 people found this helpful.

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