tmsmith

Searched but couldn't find anything.

While driving down the highway, I could hear a very faint whistle - but couldn't tell where it was coming from. Initial I thought it was just the wind hitting the antenna (wishful thinking, huh). After some trial and error, I was able to locate that it has something to do with the air conditioning and the recirculation.

With the A/C and heater on - I do not get the whistling noise. As soon as I hit the 'recirculate' it begins to whistle. It's so bad, that I hate using it unless I have the radio on.

Surely I'm not the only one with this problem...? If anyone can answer me this - is this covered under warranty? I'm planning to take it in for a few TSB and the air bag recall, so I'd like to add this to the list.

Thanks for reading and any incite would be helpful.

d_ames117

Are all the vents open? I can hear whistling when the vents are only slightly open and since the air pressure is greater when the air is recirculating, it tends to increase the noise...just a thought.

Dustin

tmsmith

Thanks for the post Dustin.

To answer your question, all the vents are open. No matter which vents are closed, opened, whether none are open - as soon as I turn off recirculate, the whistle stops.

HypromanGT

Does it happen while parked? If so, I would pop the hood and see if you can locate the sound. It might give folks a better idea of where to start.

I know there's a TSB for the FEAD Idler pulley, but that is for cold start situations (see attached txt file; sorry it's not PDF; I guess you can't upload a single page PDF because it's too big...?) In any case, I have this particular problem, but it will ONLY happen in the winter time, and ONLY on startup on a cold morning, so...I doubt it is the same problem