Problem Description and Possible Solution
Misalignment of the accessory pulleys or a faulty drive belt tensioner may cause a chirping or squeaking sound while the engine is running. In If the replacing the belt tensioner does not correct the noise, the alternator pulley may require replacement.
Average mileage: 131,741 (50,000–220,000)
Engine affected: 3.3L V6
36 people reported this problem
Just had idler pulley, tensioner, water pump, and serpentine belt replaced. Now hear a chirping noise when A/C is on.
Noise made by fan belt, when idleing, not a pleasant sound new belt did not help, need ideas to correct offensive sound!
I have the chirping problem . Replaced all Idler Pulleys as well as tension pulley. Did good for about a month then started again. Don't know if it help but looked close to the drive pulley. looks like it is wobbling a little. Going to take it into the shop and see if that is the problem. This has happen to so many of this model that Chrysler should have been forced to recall these vans and been made to fix it. When mine first started to do this the belt would also come off when it went through very mu water. Changing the belt and the new style pulleys help the problem.