my 91 ef is making a LOUD SCREETCHING sound upon start up and take off then slowly goes away it loud could this be a pulley? timing belt thanks

 

It's an accessory belt Alt, PS, or AC either the belt is not tight or it's dry rotted. Your timing belt will not squeal..

 

its probably becuz someone put WD-40 on it...my alternator belt does that whenever it touches water becuz i accidently got WD-40 on it.
spray tire shine on it. or tire foam...i did that and it RARELY squeeks

 

just change the belt and do it right the first time.

the access belt/s might be on too tight.

 

Iv found that if you take conventional bar soap and have the car running have the belt run over the soap it leaves the soap residue on the belt and it helps the pulley grip the belt, it wont squeal again unless it's dry rotted or wet.

Bottom line....replace the belt, tension it properly so it's tight and be done with it.

 

its your alternator belt 100% sure and its probably not tensioned right.
the belt costs 8-14 bucks new for a gatorback

can also be power steering only if your car has it. but since you got a 91 ef?maybe hatch im sure it doesnt have it

and you can have a new belt in less than 10 mins installed and properly tensioned with a wrench.

just keep going around replacing it and one day youll drive and that **** will snap or become extremely loose your car drains all its power.

 

i just had the same problem all you have to do is loosen the alternator and push it back alittle so the belt isnt loose and tighten it back up