Tonight i was going on a call and went through some flooded roads. when i got back in my truck i noticed a new noise. when the engine gains rpms there is a (whirring?) noise that gets higher pitched. i have not had the truck long but this is new. I have no idea where to start to figure this out. Any clues to what this may be would be great. Thanks.

 

Is it coming through the speakers? If so you have alternator whine.

 

Water in the rear end ???

 

im not exactly sure if it was through the speakers. it seems to be coming from the front right side of the cab. ill check it out on the ride in to work. thank you

 

Alternator got wet perhaps, or the belt.

 

It turns out it was the the power steering pump and the water had nothing to do with it. Good timing i guess. Thanks for all the help!