DieselGoose

Alright here is the deal i have a high pitched whistle/squel coming from the either the front end or the motor. I cant narrow it down as it only does it with im driving so i am guessing it is something in the front end. I have heard it before and then it went away right about the time i had to replace my vacuum pump seal. Now it is back again. I am guessing that it is the vacuum seal again from past experience but I am just wondering if this is something somebody else has noticed on their rig and have narrowed it down?

I only hear it when i have the windows down. It is only pronounced when i let off the accerlator and am coasting. I can really hear it when i take it out of gear and coast. It stops at about 5-10 mph. I hope it isnt the seal again as it is a pain to replace.

Korney

If you hear it and coast with the clutch down does it go away? That would separate drivetrain from engine anyways.