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Why would an Explorer make a squealing noise when you start it?
Wiki User
∙ 16y ago
Assuming you have already checked the obvious, the serpentine belt tensioner and belt. A common cause of the squeal in 4.0 Ford engines is the camshaft sychronizer (takes the place of the distributor on DIS, distributorless ignition systems). It sounds very similar to a belt squeal and is often mis-diagnosed as a belt being loose or worn. The noise can be intermittant, but if the noise is there when you have the hood up use a simple mechanic's stethoscope to help pinpoint the source of the noise. == == The most likely culprit is a serpentine belt or the belt tensioner. Try replacing the serpentine belt. If the noise persists, replace the belt tensioner. See the related article "Serpentine belt and Tensioner FAQ for the Ford Explorer all models"
Wiki User
∙ 16y ago
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