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1990 Ford Bronco Belt Coming Off over and over

Tiny
EDCYOUNG2
  • MEMBER
  • 1990 FORD BRONCO
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 170,000 MILES
My truck has a problem with the belt coming off 2 ribs towards the engine on the power steering pump. This is random times. Most of the time in the morning. I catch it and put it back on then it lasts a day or 2, or maybe not. Sometimes the belt rips. Ive been through 4.
I have changed the fan clutch, 2-idler tensioner with pulley. Belt is tight. All seems straight and no wobles, all 6 groves. The power steering pump click sometimes when I spin it w/out the belt. The alternator has a little wobble but the autoparts store said this is not enough to throw the belt. The water pump has corrosion but does not overheat and spins freely. 2 shops cannot see anything. Any ideas?
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Wednesday, July 29th, 2009 AT 10:17 AM

1 Reply

Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
Take a straightedge and check all the pulley and make all of their faces are equal. With belt on and running look to see whats happening. Have some one rev up and down see if it will cause it to move.
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Tuesday, August 18th, 2009 AT 5:45 PM

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