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it has a manual tensioner
This is a serpentine belt that runs all of the pulleys on the front of the engine. There is a separate tensioner pulley and not one for the water pump alone. A bad tensioner will allow the serpentine belt too much slack which will allow the belt to slip and yes, the engine can overheat as a result.
The serpentine belt goes around all of your pullies in the front of your motor, behind the radiator.
Should have an automatic belt tensioner -perhaps it is defective I don't think there is a belt tensioner. Belt tension is adjusted at the power steering pump bracket and idler pulley assembly.
this should be spring loaded self adjusting if not tensioner is bad.
Antifreeze? Water pump?
Jeep Grand Cherokee was created in 1993.
No such part on a 2002 Jeep Grand Cherokee.No such part on a 2002 Jeep Grand Cherokee.
It's on the radiator shroud or brace, on the right of the fan.
no
The grand Cherokee is a body style, sport is a trim package that is used on all jeep models(wrangler, Cherokee, grand Cherokee, patriot, ...)
Jeep grand Cherokees are normally more $ than regular Cherokees, the grand Cherokee was originally made to replace the Cherokee