87 hatch

i just bought a new fan blade for my 87 gt and im wondering if i should just replace the clutch while im at it, but i dont know if my current clutch is working or not. is there a way to know? when the car is running the fan blade is turning all the time. is this normal.

mstng675l

When the car is off try an spin the fan if it doesnt spin then you know...

angcobra

Well I had typed a very nice description and procedure, when I hit the Ok button, I had already been automatically logged out. I will type it again in a few minutes.

angcobra

It will turn some all the time when the car is running. It just will turn slow when the air temp at the fan is cool.

The purpose of the fan clutch is to slip when the fan air flow is not needed and turn the fan to create air flow when needed. Normally when running down the highway the air flow is enough the fan is not needed.

The clutch can fail in 2 ways, 1) bound up will not slip, this is bad because it robs your HP 2) slips to much and engine runs hot when idling for a long time.

To check for bound up failure, check first thing in the morning before starting car, use your hand to rotate fan, it should turn easy. If it will not turn at all, replace.

To check for to much slippage, drive the car until it is at normal temp, stop and let it idle for 10 minutes, engine temp should stay the same, you might hear the fan get louder as it blows more air. If the engine does not run higher than normal temp, fan clutch is okay.

BigMg

good way to check

But you should really just get rid of that clutch fan and get an electric.

BigMG

mightstang

My fan clutch just went, the fan it self would wobble, but it was just an excuse for me to put an electric fan in, so if i was you i would do the same.

87 hatch

ya i want to but i have already spent alot of money on other things and i just want to get it on the road

thanks

crazyhorse

mightstang, please tell me where you got your electric fan, what kind & price. thanks.