Forgive me. I sent you a response, but apparently it didn't post.
There are 4 things that will keep your AC compressor from coming on. I'll list them as most probable first.
Fuse
Compressor relay
Low pressure cutout
Control switch on the dash.
Note; The compressor should run in the "defrost" mode on the selector switch.
Tuesday, April 14th, 2009 AT 11:46 AM