N3V3RL8T

iTrader: (2)

FOr the past few days my car has started to make a whining sound that almost sounds like wierd supercharger. Noise get louder with engine RPM but only last for a minute or two. im thinking AIR pump? any ideas or comments are appreciated. Thanks a lot. Josh.

2001NBMZ28

To see if it's the pump - pull the "AIR PUMP" fuse under the hood and see if it goes away. It'll throw P0412? but turn off after replacing the fuse and a few cycles.

N3V3RL8T

iTrader: (2)

awsome, thanks a lot, ill try that tomorrow morning and post results.

2001NBMZ28

Just something to try...not sure if a bad pump would increase in noise w/RPM's though? Won't hurt to disable the pump and check.

99PontTA

air pump will not change with rpm's...sounds like you maybe a little low on power steering fluid....will act like you are describing.

Reznor

iTrader: (4)

yea, i'm gonna stay power sterriing fluid as well. i just topped mine off because it was doing exactly that.

N3V3RL8T

iTrader: (2)

ok i pulled the fuse with no change in sound. Checked powersteering fluid, it was a little low but still btween the marks. could it be a pully going out? there seems to be a lot of noise comming from under the hood now.

bmccrary

Mine just started doing that the other day as well. (LT1) It goes away after some heat gets in the motor. But when I turn in on, and there is still heat in the motor, it will still do it. After I go down the road a little bit, it goes away.