teamtech

Hey guys, lately my car has been making a sort of squeeling noise from the engine when my rpm's are above 2500......the sound seems to get worse if i accelerate to say 4000 and let off the throttle....thats when i really notice it, but that could be because when im accelerating my exhaust is loud....it does it no matter how fast i accelerate. the noise also seems to come and go....any ideas on what i can check?


87 gt, MAC equal length headers, MAC x pipe, MAC cat back w/ LX tailpipes, Cobra rear bumper, 3.73 gears, A/C delete, Lowerd approx 3"

1BADASSLX

I HAD SAME PROB ONCE IT WAS MY ALTERNATOR BEARINGS WERE BAD !! take off you belt spin alternator see if it sounds like what you hear.

Milky

ya, probably a bad bearing or some kind of pulley squeaking...

teamtech

well lets assume it is the alt. bearing....how hard is it to fix? new alternater?

me alot fast than u

this is your q to upgrade it to a 100 amps or better

bobby

yup, and 1 wire if you want, it could very possible be your clutch fan too

86HOGT

Do as BADASS said, and take the belt off temporarily and start the engine to eliminate any internal engine noises. If the noise goes away, it's in the accessories. Not just the alternator, but the water pump, smog pump, power steering pump, or A/C compressor.

And don't worry, running the engine for a short period of time without the belt won't hurt it neither.

teamtech

how would i test for clutch fan? oh and by the way i need a new belt....but i have a problem....i have no a/c, and no smog pump....how can i route my belt, and which size do i need? it was a BITCH last time i tried to put my belt on and im afraid to take if off.

86HOGT

Here's the way I routed mine...(below)

I used an 84 1/4" belt...was really tight needed to walk the belt on to get it to fit but even after all that i took a tensioner gauge to it and was still as tight as an old belt would be, but tight enugh so that it wouldn't squeak anymore after having a longer belt on. You can try an 84 1/2" belt so you can get it on and off by yourself. My tensioner is probably wore too, but you never know until you try.


[IMG]local://upfiles/1992/1D29400BDF214D5D81F2198D9EF45325.jpg[/IMG]

teamtech

cool thanks....the way i have mine routed right now it goes to the water pump before the tentioner then to the alt.......this way looks alot better! im going to go buy a new belt tonight and ill see how it goes. if i upgrade my alt. do i need to upgrade anything else in order to handle the extra amps? i still want to know how to test for a bad fan clutch....spin fan id assume?