drewskeez

i have a 93 F150 225XXX miles the belt squeals some times its a new belt a new belt tensioner and a new idler pulley i cleaned all the pollieys before i put the new belt on and i had a friend look at it he was a mechanic for about 20 years and he has no idea what it is so if anyone can help i would relly appreciate it

MONSTERPRE

sounds like it's not any of those things, lol!
If it's a very rapid squeak, my guess would be an internal bearing in one of the pulleys(one that may not be connected to the alt/ac/ps/airpump), just one of the re-directional pulleys. if the squeak is consistent with the rotation of the belt or slower, it would be something related to what you've already replaced.

Good old Bill

What type of ignition system does the 93 have?

dirtcrew51m

Try spraying some wd40 on the belt and see if it stops, the wd will sometimes condition the belt and it will stop squeaking.

drewskeez

i wouldnt say its a rapid squeak it only starts after 1300 to 1400 rpm's sometimes its loud and others i cant hear it if there is any noise in the cab and some times it dosent do it at all
anything i shouls check first
thank you

drewskeez

thanks for the idea but ive ruined 2 belts with stuff like that and belt dressing that is one thing im not doing agen but thank you for trying to help

drewskeez

i dont know what type of ignition system it has but i can try to look it up

dirtcrew51m

I never use belt dressing all that crap does is get sticky and collect dirt and crap, wd40 will evaporate but still leave a little lube for the squeak, I never had a problem, I use marine crc. I say wd40 its easier to get than crc.

Goatman

If it is purely "belt squeak", using a silicone spray will quiet the noise. I tend to notice more noise during the colder, damp time of the year. May sound demeaning, but only apply to the back side of the belt. Accomplish this by applying the spray to the tensioner pulley. A couple of 2-3 second bursts should cure the squeak for a period of time. I've been doing this for many years and have had no ill effect to the belt. Used to use WD-40 prior to silicone. Nothing wrong with the WD-40. I just think the silicone last longer.

dirtcrew51m

I use marine crc. I like the smell of it.