2005 pontiac grand prix 3.8 v6There is a scratching type of noise when i start the car. Looked under the hood and it seemed to be coming from the serpentine belt.Took the belt off and and checked the pulleys for any play and turned out the water pump pulley wobbles back and forth too much. Replaced the belt with a new one and want to replace the pulley. It does not seem to have a loose screw so i'm wondering if i can take the pulley itself off and replace it, or would i have to replace the pump too? Still makes the noise with new belt and you can see the pulley wobble a bit when the car is running.
You need to replace the pump itself. The wobble you feel is the bearings in the water pump that are bad. Good luck and hope this helps.
you have to replace the pump ! it,s not the pulley that,s wobbling, it,s the bearing in the water pump that,s bad and you can,t replace the bearing !
