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I got no codes for vacuum leak I did check the lines and did find dry rot that I replaced I got one code for very small evap leak. I was thinking that I needs to replace the valve cover gaskets there leaking oil a bit. Would that be were I hear it to? Anyone got a diagram for vacume hoses. I might of missed one
So the whistle stopped? Check your accessories, the alternator, p/s pump, a/c compressor, water pump, and the idlers. Spin them over. They should turn smoothly.
You might have a bad bearing on one of them.
I didn't think an '02 3.9 would have an EGR valve?
Took a short vid it gets a lot louder at times. Checked pullies all seemed good. My belt tensioner was sized pritty good but oil freed it up and no change.http://youtu.be/RPoBQYF9NgE