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Serpentine Belts

Can your AC not working have anything to do with the mechanic just replacing the drive belt tensioner and serpentine belt?


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Wiki User
2015-07-15 18:31:34
2015-07-15 18:31:34

Check to make sure the belt is routed around the compressor pulley. Also check the wiring connector at the compressor in case it was dislodged.


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I'm not a mechanic but I just had to have the belt tensioner replaced on my 99 ZX2. There are no other adjustments.

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Yes, have it checked every time the belt is replaced. Especially if yours is one of the ones made with a hard PVC plastic, which in some climates, can become warped over time by extreme heat/cold.

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The tensioner is a moving part and can wear out like any other mechanical part, however, there is one bolt in the front of the tensioner pulley (15mm) that holds the tensioner in pace. Make sure that it is tight, no play in the part. There really is no "tightening" of the belt because that is the tensioner's job. If your belt is loose or squeaking you may want to replace the part. That is what I am doing. I have a 2004 Ram 2500 4x4 w/ 5.7L HEMI and am replacing the tensioner. There are 80K miles on the rig and I maintain it meticulously. Troubleshooting the consistent squeaking after the belt r&r I decided it is the tensioner and my mechanic conferred. Oreilly's has the OEM part for $45 (DODGE HOUSE IS $75.00) and it will take 20 minutes to change the tensioner and reinstall the new belt.

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Getting the serpentine belt onMost vehicles don't require you to remove parts to install the serpentine belt. Most vehicles have a diagram on the hood or under the hood showing the proper alignment and direction of a serpentine belt. There is a tensioner that must be pulled to allow you to install the belt. With out a 1/2" Socket wrench you will not be able to put the belt on your car. If you don't have a diagram and cant find the tensioner pulley I suggest asking a mechanic for help. Its not time consuming if you know what your doing. I can change my serpentine belt in 10 mins MAX, on my Lincoln caddy and x terra. None of them require removing a part.

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