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1990 Mercury Grand Marquis Question: drive belt tensioner



dum8365, Rapid City, SD, March 15, 2010, 23:42

Do these tensioners weaken with time, if not do the smaller serpentine belts stretch over time

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  • Answer #1

    patrick mannion from Greg Solow's Engine Room, March 16, 2010, 00:51

    All the engine accessories (power steering pump, alternator, air conditioning compressor ect are all driven off one fan belt that takes many turns and twists around each component and around idlers and tensioners. Check the fan belt for cracks or contamination. The belts don't stretch most likely the tensioner cannot adequately tension the belt.

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