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It depends. The explorer has a front timing chain and rear timing chain assembly. While the rear cassette/tensioner rarely fails, it is far more expensive and difficult to fix. If the front tensioner is the problem (which it commonly is), then the repair is quite simple. Either way, a dealership will charge an arm and a leg to repair. I have heard that fixing both can be as much as 2-3 thousand dollars.

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16y ago

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