hey my car was vibrating really bad a day ago. Took it to the shop and they said it wassomethung to do with the crank. I though it was a good time to replace the pulleys with some UDPs, so I did. Now after I got the car back the very bad vibration it had was gone, but now I hear some kind of chirping by the pulleys. DO they make any sound like a break-in period or is there something wrong?

 

take a long screwdriver and safely place it against all of your belt driven accessorys 1by1 while the car is running.
place your ear to the end of the screwdriver, and when you have found the problem, you will hear the chirping through the screwdriver.

my bet is the waterpump

 

yeah i replaced the alt., water pump, and Crank pulleys (MAC) but I will do that in the morning see what happens

 

could be the belt too, if they didn't replace the belt with a correct size to correct for the UDPs then it will chirp from being too loose

 

after i got my new alternator put in, i had a nice loud chirp...my serpentine blet hada niceee longg gash in it...they put the wrong size one on, so it ripped, and there was my chirp...i will never go back to that shop again

 

did they say it was the crank is it the thrust bearing on the crank?????
if this bearing goes the crank will move back and forth and you get that vibration you are talking about... it would do it real bad when you first try to take off in 1st or taking off in 1st when your going up a hill..??? its not bad to change that bearing if you can get the oil pan off

 

It says that the UDPs retain the factory belt... maybe its loose? They replaced something that held the crank pulley to the crank.. Im not sure my dad took it while I was a work.