My belt tensioner is probably dying, it vibrates and makes metalic clicking noises when the car is in drive or reverse, it vibrates less and no noise when car is in park or neutral. It took me quite a while to figure out what was causing the noise because every time I put the car in park and opened the hood to have a look, the noise went away
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The car is '99 Taurus with the OHV Vulcan engine. Does anyone know how to replace the belt tensioner and what size and kind of the star wrench (I believe) I am gonna need?
Thanks...

The car is '99 Taurus with the OHV Vulcan engine. Does anyone know how to replace the belt tensioner and what size and kind of the star wrench (I believe) I am gonna need?
Thanks...