2004 Ford Mustang belt squeals and there is not enough tension. Does the whole belt tensioner need to be replaced or just the pulley that is attached to the tensioner?
Hello There, The drive belt tensioner may not need to be replaced if it is just the bearing inside the tensioner that is worn out, which is often times the case. As you may know, the tensioner pulley has a bearing inside of it that allows the pulley wheel to spin while putting pressure on the belt. If the tensioner is loose, this may be also causing the belt to be a bit loose as well. I would suggest having a professional from YourMechanic come to your location to inspect your car.
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