can't figure out what noise is from leaning towards powersteering pumo new belt checked tensior no slack tool off belt and spun all pullies nothing seemed out of place

 

Maybe a vaccum leak somewhere? But very well could be. I owned all fords and nothing else and all the powersteering pumps made strange noise?

 

Double posting... And your video still doesnt work.
https://www.f150online.com/forums/19...ify-noise.html

Forums allow 1 thread per subject

 

click on it and it works

 

No, it just shows an image

wait there it is

Hard to tell. I would remove the belt and start it, instead of spinning the pulleys by hand. See if the sound goes away. Sometimes a whine can't be heard at low rpms or by spinning them by hand.

 

Like F150redneck mentioned maybe a vacuum leak?

But with colder weather upon us... it maybe the bearings in the alternator showing early signs of giving up.

yeah Like Toyz said, remove belt and spin individual items to help pin it down.

 

will try tonight if it doesn't duplicate sound am i looking for not a smooth turn?

 

yes ...water pump and alt will prolly turn a bit stiff...but smooth...if anything feels rough, most likely is the culprit.

do you have a long handled screwdriver or automotive stethoscope, that you can place on each item and put your ear on the handle as you spin...be surprised what you can pick up

 

tried it both the idler pulles wont spin for long time but do spin, the alternator has a squeek to it tried to spin fast by hand but couldn't dupliclate same sound.... so alternator....hmmmm

 

was the sound gone..?

 

Have you started the engine with the belt removed to see if the sound is still there?

 

started with no belt no noise, which way does alternator spin? gonna put impack on it and see if it recreated noise

 

bump anyone?