95 Bonneville SE - Sqealing noise diagnosis???
Hey guys, I've got a 95 SE and am looking for some help determining where a squealing noise is coming from.
Here are the syptoms:
The noise only presents itself after I've been highway driving for a while (if I get in my car and city drive, the noise never occurs, regardless of how long I seem to drive it). Also, when it'* acting up, It only seems to be audible from idle to around 1500RPM as well. Whenever I accelarate from a stop sign/light, the noise goes away, however if I take the car out of gear and bring it up over 1500RPM, the noise persists (and its rather obnoxious). One other thing I've figured out is that if I take the car out of gear and bring the engine over 1500RPM, the noise persists.
Finally, if I let the car sit and cool off for 5 or 10 minutes and then start it back up, the noise doesn't come back (unless I highway drive it again).
My first guess was that I had a bad idler pulley. I changed the belt and pulley yesterday afternoon and then went out to test it. Same problem. The only other things that I can think of would be either a water pump or power steering pump going out on it. Any thoughts, as I'm rather stumped. BTW, for reference, the car has 75K miles on it.
Any help you can give me would be greatly appreciated.