I have been thinking of cleaning my evaporator for the reasons mentioned, ie: cool but not cold air. My system was rebuilt this year but when on low I have ~40* at vent, but on high or auto more like ~60*. I am not really looking forward to opening the dash so I was glade to see some ways to clean out the evap. without doing that. Of course if this doesn't work I know what is next.
Westkill did your system work better after you cleaned it out? I like your approach using the air tool to clean out the fins!! I will be putting together my own "mini pressure washer" this weekend! Thanks for the discription.

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If it ain't broke take it apart and find out why.

1983 300SD, 4 speed
1994 C280
1987 300TD wagon
1996 HD Road King

Ride in Peace Eric Peterson, Harley of Macon