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ford aerostar serpentine belt


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captin andy
New User

Oct 16, 2006, 6:39 AM

Post #1 of 5 (2372 views)
ford aerostar serpentine belt Sign In

I have a 1990 ford aerostar 4.0L. with AC. I just replaced the alternator but I am unable to replace the serpentine belt. I have tried a new belt and the old one. I know that the routing is correct but even with the adjuster pully loosened and pushed forward to it's fullest extent the belt is about 1" short of going under the adjuster pully. Any suggestions? Thanks.


DanD
Veteran / Moderator
DanD profile image

Oct 16, 2006, 7:03 AM

Post #2 of 5 (2370 views)
Re: ford aerostar serpentine belt Sign In

Is the Alternator’s drive pulley the same diameter as the originals?
Dan.

Canadian "EH"






captin andy
New User

Oct 16, 2006, 7:06 AM

Post #3 of 5 (2368 views)
Re: ford aerostar serpentine belt Sign In

yes, we put the orginal pulley on the new alternator


DanD
Veteran / Moderator
DanD profile image

Oct 16, 2006, 8:05 AM

Post #4 of 5 (2366 views)
Re: ford aerostar serpentine belt Sign In

Well if everything is the same it almost has to be that you don’t have the belt routed properly???
Dan.



Canadian "EH"






Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Oct 16, 2006, 11:32 AM

Post #5 of 5 (2361 views)
Re: ford aerostar serpentine belt Sign In

To add: Count the grooves on belts and pulleys. It wasn't your exact vehicle but I did have a problem once with a Town car with either six or seven grooves in and around that year????

Measure twice -- cut once, T







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