Bad Pulley? Sqeaks bad!!!

[Killer50stang]

I replaced my belt over the summer and every now and then when you started the car, it would sqeak and then go away. Now it's doing it while I drive. Belt seems to be tight. I've also seen pullies on alternators sieze and A/C compressors cause these issues. Shouldn't all pullies spin free but the crank pully? Thanks in advance!

 

[NKau]

Check the pulley on the tensioner first to see if it turns freely. Mine is binding, and causing my serpentine belt to screech. Gotta take care of that this winter.

 

[fastford91]

yes all pulleys should spin freely except the crank! is one not spinning? if so that's your problem! if they all spin freely... take a can of wd-40 or some belt spray and spray it on the belt with the motor running! if it stops its your belt! if you do both of these and it still squeals! i would say you have a bearing in one of the pulleys going bad! James

 

[7-UP BILL]

I had the same problem and it turned out to be the smog pump. squealed like a pig on start-up then quieted down. Pulley also turned with no problem.

 

[HISSIN50]

It can also be a pulley out of alignment.

If you have a mechanics stethoscope, you can carefully listen to the accessories to see if you can narrow it down.

Good luck.

 

[Killer50stang]

Thanks. I haven't taken the belt off yet...too cold. I'll let you know. You can tell when it's going to squeel, because the inside lights go dim for a second or two, then it squeels....weird....

 

[my2foxes]

I am having the same problem with my DD. I just noticed it earlier this week , I can hear it when the car starts and idles , I can't hear it inside the car while driving. The belt is only about a year old , will check pulleys this weekend.

 

[strtrcr50]

Thanks. I haven't taken the belt off yet...too cold. I'll let you know. You can tell when it's going to squeel, because the inside lights go dim for a second or two, then it squeels....weird....

That sounds like your alternator is having problems. Another thing to try to eliminate the belt itself making noise is to spray a little white grease on the belt while the car is on. When it's squealing, what does the volt gauge do? Also, if you don't have a mechanic's stethescope, you can use a long screwdriver.

 

[Killer50stang]

That sounds like your alternator is having problems. Another thing to try to eliminate the belt itself making noise is to spray a little white grease on the belt while the car is on. When it's squealing, what does the volt gauge do? Also, if you don't have a mechanic's stethescope, you can use a long screwdriver.

That was I'm thinking. I'm going to tighten the belt today or tomorrow and see if it continues and go from there.

 

[strtrcr50]

Before you tighten it(overtightening will smoke bearings), check to see if the belt is glazed too.