smtippin

Need your help all. Temps have dropped to below freezing temps here in Wyo and my heater/AC is squealing. The air seems to be blowing fine and according to settings (ac or heat), but there is a quiet high pitched whirl and/or loud squeal for various durations randomly while driving. The sound will be intermittant for maybe 5 minutes before it stops and the heat works fine. It just happens at every start up. What gives?

PS. This all started abruptly after letting the Jeep sit for approx. 2 week when out of town. Sounds seem to be coming from behind the glove box, where I believe I saw the blower motor previously.

Gimme your thoughts. If my blower is about to explode, I'd like to have another ready so I don't have to drive without heat/defrost for a while.

Thanks again,
s

Abovetimberline

It is possible something has crawled in there and set up home when it got cold. Try and pull it and see if anything is in there.
My heater core also made this noise when it had air in the system.

smtippin

pull what? The blower behind the glove box? How do I check for 'air in the system'?.

Thanks,
s

mike albo

Sounds like a bearing is makeing a little noise in the fan, it should be fine unless you can't handle the squeal.

aircrewallan

ya mine does something to that effect...when i get the heat turned on outside the car sounds like its surging, like the compressor is loading up then unloading and i have a minor squeal during the "load" cycle and it causes my headlights to dim every 5 secs or so < not sure if its the same for you or what the deal is with mine...

UK PONY

Mine does the same thing...I have a used blower motor set aside just in case (pretty sure it's the blower motor bearing) but for now I've found that if I turn up the blower speed the squeal goes away much quicker..then just turn the blower speed down to whatever you need it to be.

lhickey

Trying to figure out how to get to the blower in my 2002 Jeep Grand Cherokee. A mouse - now dead and getting smelly - took up residence.

speedyp

I have the exact same issue, I came here to find an answer. Hopefully someone will have a cure for this !


I second the following it does work pretty good :