New to forum, need help
 

Hello everyone I just picked a clean '06 Imola Red 4.4 . Love it, fun to drive. Just recently I noticed a for the lack of a better term a "whine" only when I'm idling. Not a supercharger whine but different kind of wine. The odd thing is sometimes it is there, other times it is not. It is really annoying and I am embarrased when I am at a light or having stopping at the gate guard for id check at AFB. I know there could be any number of possible solutions but thought I might throw it out there and see if this might be a common issue on these vehicles. Also I am not throwing any service lights either. Thanks for the help everyone.

vacuum leak?? idler pulley bearing whine?? power steering pump?? (fluid?)

How many miles are on your car? If the mileage is high it could be the timing chain guides, I recently replaced mine, it will make a whining sound before they let go. Do a search for "timing chain guides", it's a very labor intensive job, not easy. I'm Air Force Reserve, retiring in July after 22 years, where are you stationed?

Only whine I hear from 4.4 owners is when they get the bill for the repairs/maintenance.