Would a belt tensioner that is moving make a battery drain?
1999 Mercury Sable

Would a belt tensioner that is moving make a battery drain?

(1999 Mercury Sable)
it moves a lot and the battery is not charging
3 answers & 4 comments
Popular Answer
on April 29, 2015
The answer to the posted question is NO!!
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on April 29, 2015
ok then what is the problem then??
on April 30, 2015
That's yet to be determined by a qualified mechanic with the tools and talent to properly diagnosis the problem hands-on!
General Diagnosis
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on April 29, 2015
The answer to the posted question is NO!!
Sign in to reply
on April 29, 2015
ok then what is the problem then??
on April 30, 2015
That's yet to be determined by a qualified mechanic with the tools and talent to properly diagnosis the problem hands-on!
on April 29, 2015
have charging system checked.you need to check the output of the alternator,and change the tensioner if it is moving alot.if the belt is not turning the alternator,it will not maintain the battery.check battery voltage with car off,should be 12.6 vdc.then start the car and check battery voltage again,should be 13.5-14.5 vdc.the belt probably needs changing also.
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on April 29, 2015
every thing has been checked just notice today the tensioner is moving a lot and battery is not charging but the alternator is good too!!
on April 29, 2015
The only way the belt tensioner would not allow the battery to charge from the alternator is if the belt is slipping. Is the belt slipping? With the car running, what is the voltage measured at the battery? Is the battery light illuminated on the instrument cluster? I'd replace the belt tensioner at the very least and get my alternator tested.
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on April 29, 2015
belt isn't slipping but the belt tensioner is moving a lot and alternator and battery both have been checked they are good!!

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