engine whine on cold mornings

[njoph85]

whenever it is below or near freezing in the morning when i start my car up there is a high pitch whine, sounds like a supercharger. this happens while in park warming up, while in neutral revving engine, and while in drive. what is this and why is it only happpen in the cold??

 

[jimbo74]

sounds like it is just normal... to me, it sounds like you are describing intake hum.... it may be related to vacuum and the colder more dense air.....

 

[RytM1]

Might be a belt slipping a little. My g/f's car does the same thing. The belt material is cold, and therefore gets a little "hard", and doesn't get enough "grip" on the pullies untilit warms up.

 

[njoph85]

thanks hopefully it'll stop when it gets warmer

 

[CHuntMD]

Three things, two easy to replace.

1) Idler Pulley
2) Idler Tensioner
(both available at NAPA for under $60)

3) Water Pump

Chris

 

[slag]

and/or fan clutch.. my 93 does the same thing.. when its cold, it whines(screeches) a bit until the motor warms up and then its fine. I dont know for sure what it is, but when I am changing out my radiator here in a few weeks, I will look into replacing whatever it is..