Yeah sounds like you have a new project for today BA

-Gun

 

Hmmm… Neither my Mustang or Corvette suffer from belt squeal.

 

There is one more thing...

- The pulley(s) are worn out

I have owned a truck where the "V"s on crank pulley were worn down enough that the belt was resting in the bottom of the groove and NOT on the shoulders of the pulley... It did not matter HOW TIGHT a person got those belts, it WOULD squeal whenever the fan clutch kicked in...

Probably would not happen in a car, but maybe. For me, the solution was to put slightly wider belts in place. (vs. several hundered $$ for a new pulley) This worked fine so long as I made sure people did not replace the belts with the "RIGHT" ones... and this is actually harder than it sounds on a fleet truck....

 

When you quickly rev the motor it shifts slightly. Are you sure you're not squeezing a small farm animal against the right shock tower?

Fan belt or animal? You make the call.

 

That's BA's fan belt for sure...no contest.

-Gun

 

Hmm it is very possible, will check and confirm engine not squeezing small farm animal against the right shock tower.

 

JMD, very true. i've seen a lot of worn pulleys. none ever so far down that the belt would sit on edge. but i wouldn't bee too much surprised to come across one in a very high mileage car. and i hear your: "try to make sure everyone's having to put on the wrong belt". it simply doesn't work :-)

 

I've also seen one that the alternator pulley was so glazed from years of use that the belt just couldn't grip it but I consider that a freak deal.

 

Can't fix it. I've had the problem since last december. New belt, new harmonic balancer, new water pump, new alternator(with old pulley).

 

BA, you've got a problem somewhere. It's fixable. What kind of belt are you running? And how tight are you tightening it?