blend door

[fxmoose]

Hi all, maybe someone can tell me if the 2003 xlt expy or this generation has any inherent problems with the blend door. I know previous gen. had some problems. Does the dash rotary switch go bad? Put the heat on last fall and can`t get 100 % cold air now. Any ideas? thanks

 

[tallsville]

coach do you have rear air? elvato has something on this but cant find it right now. but it seems the plastic gears strip teeth off.
http://expeditionforum.com/showthread.php?t=13543&highlight=blend+door

from joezek
I bought my 03 with rear a/c broken and front worked great. Thanks to help from ELVATO I got it working again.

In my case, and most other people's, the two actuators that control temperature (blend door) and ceiling/floor vents both break. There are tiny little plastic gears inside the actuators and they break the teeth off. Then the blend door gets stuck on full heat, and the air gets stuck on either ceiling or floor.

Those actuators are expensive as hell, but I got the gears dirt cheap (free) and completely fixed the problem in about 2 hours. You could also just take the rear a/c compartment apart and manually set it to full cold and then not worry about it. That's what I did before fixing it.

 

[fxmoose]

thanks for info. my rear a/c works great but the floor / ceiling door was banging so i disconnected motor and left on ceiling. it gets cold. the front seems to be in limbo between heat and cold. could the rotary.rheostat switch be bad. from heat to halfway i hear nothing. from halfway to full cold i can hear motor turning. is there someway to get something in the plenum area to close door? or can i access at motor area and disconnect and manually close door to cold?