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1999 Ford F-150 Truck

Tiny
JADREW
  • MEMBER
  • 1999 FORD F-150
  • V8
  • 4WD
  • AUTOMATIC
  • 184,000 MILES
A pulley on my 1999 Ford F150 is making a siren or buzzing type sound constantly when engine is on. Is the pulley bad?
Saturday, January 15th, 2011 AT 5:33 PM

2 Replies

Tiny
FORD MAN
  • MEMBER
  • 115 POSTS
Depending on which pulley it is, will tell you which bearing has gone to hell.

Ford Man in Michigan
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Saturday, January 15th, 2011 AT 7:20 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,164 POSTS
Remove the serp belt and check for excessive play in all of the accessory pullys. Also, spin the pullys to see if you can tell if there is excessive noise coming from them. Like Ford Man said, the only way to tell is to locate the noise so you can tell which bearing is bad.
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Wednesday, February 23rd, 2011 AT 1:19 PM

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