The car runs and sounds perfectly fine when started cold. However, a high pitch squeaky sound begins once the car starts to warm up and when the rpm increases or when I start to drive then the sound also increases. It definitely sounds like its coming from the front driver side in the engine bay, where the power steering and AC pump is at. . The belt is new on there so I know that’s not it. I tighten the belt more and it still squeaks. I replaced the tension pulley with a spare one I had and it still squeaks. I sprayed a little WD40 on the belt and the pulleys and still nothing.
What could it be? My guess is the bearings for one of the pulleys are bad.

Thanks

 

you still have a smog pump hooked up? check that. Mine went out before and made a weird high pitching sound randomly

 

Make a video of the sound.

 

I had the same issue, turned out to be a vaccum hose at the back of the uim near the bulkhead that i didnt reconnect when i put the uim back on

 

Did you really spray wd40 on your belts? Lol

 

My same exact thought.

Yea, you're belt is slipping like krazy with wd40 on it. Technically you should either spray water, or soapy water. Get a new belt, make sure you've tightened the tensioner for the belt and have all pulleys cleaned before putting that new belt on there...

p.s. once the belt is off, I would hand spin every single pulley on the car and look for one that grinds and spins "too freely". <--- that might be the culprit.

-AzEKnightz

 

if your talking about the air pump then yes i still have it on but its not coming from that side.


nope all the vacuum hoses are still connected.


yeah i know... when i took it to my friends place to get it looked at he said i should spray some on the belt and pulleys. At first i didnt think about it because the sound of it was seriously killing my ears so i just sprayed away... stupid move, i know lol.

 

I asked for a video because I too had a high pitch squeel. I thought it was my alternator. Turned out I had a vacuum leak.

 

ok ill try to make one.

 

I had an issue like that too. It turned out to be a vacuum hose that looked perfect when the car was turned off. Once it warmed up (the rubber hose, that is) it would soften and the hairline crack in it would begin to leak and squeak.
The crack in the hose was so small that the only way I detected it was with soapy water. When the car was turned off or not warmed up, it was literally invisible.

 

Simmilat issue with mine it only squeaked when warmed up but the vacuum hose had actually come off the uim connection, it was a hard one to get aswell because its under the uim at the back by the firewall