Pulleys & Belts & Fans, oh my!
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Junior Member
Joined: Jul 2005
Posts: 7
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Pulleys & Belts & Fans, oh my!
2000 Ford F150 4.6L V8 w/air
OK - the problem is a rubbbing / bad bearing noise
. Thought it was the idler, replaced the idler and the belt. Looks nice, but no change. Turned the alternator by hand, it made squeaks, so replaced Alternator. Still the same noise. Now I'm $200 out of pocket with do-it-yourself work, so I decided to quit guessing and come to the experts 
!
Question #1 - I can turn my cooling fan by hand? It's a little stiff, I can turn it, but I can't spin it like a wheel . . . is this right
?
Question #2 - I know these and other Fords are notorious for a whining noise under the hood, but mine has gotten progressively worse since I bought it 4 months ago . . . and this sounds more like rubbing than whining . . . It goes away (or at least minimizes) at speed. Is there any way to pinpoint this disease? I can't stethescope it 'cause the suspects are all turning pulleys!
CC
OK - the problem is a rubbbing / bad bearing noise
. Thought it was the idler, replaced the idler and the belt. Looks nice, but no change. Turned the alternator by hand, it made squeaks, so replaced Alternator. Still the same noise. Now I'm $200 out of pocket with do-it-yourself work, so I decided to quit guessing and come to the experts !Question #1 - I can turn my cooling fan by hand? It's a little stiff, I can turn it, but I can't spin it like a wheel . . . is this right
?Question #2 - I know these and other Fords are notorious for a whining noise under the hood, but mine has gotten progressively worse since I bought it 4 months ago . . . and this sounds more like rubbing than whining . . . It goes away (or at least minimizes) at speed. Is there any way to pinpoint this disease? I can't stethescope it 'cause the suspects are all turning pulleys!
CC
Senior Member
Joined: Sep 2005
Posts: 2,618
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From: Atlanta, GA
SOunds like either the waterpump bearing is dying or the ac compressor is causing you grief. My ac compressor raises hell periodically, and it took me several attempts to identify it.
Try this (and be careful, don't post that you lost an ear doing this)
Take a long handle screwdriver, and touch it to individual components (yes while running, thats why you have to be careful) Put your ear to the handle and listen. The sound will amplify through the screwdriver and the one thats the loudest with the noise you are talking about is most likely be your culprit. Now, its not a perfect system cause you'll probably hear the noise in all the components, but it'll be the loudest in the one thats causing the problem.
Try this (and be careful, don't post that you lost an ear doing this)
Take a long handle screwdriver, and touch it to individual components (yes while running, thats why you have to be careful) Put your ear to the handle and listen. The sound will amplify through the screwdriver and the one thats the loudest with the noise you are talking about is most likely be your culprit. Now, its not a perfect system cause you'll probably hear the noise in all the components, but it'll be the loudest in the one thats causing the problem.
Senior Member
Joined: Dec 2004
Posts: 5,005
Likes: 27
From: Dover AFB DE / Harrisburg PA
Originally Posted by 98Navi
Take a long handle screwdriver, and touch it to individual components (yes while running, thats why you have to be careful) Put your ear to the handle and listen. The sound will amplify through the screwdriver and the one thats the loudest with the noise you are talking about is most likely be your culprit. Now, its not a perfect system cause you'll probably hear the noise in all the components, but it'll be the loudest in the one thats causing the problem.
A mech steth is like 5 bucks at harbor freight.
Adrianspeeder
