[bob10345]

I got my Sable A/C all charged up and now my '99 Taurus is acting up. I'm hoping you guys come through again. Two days ago the air was cold and yesterday it was like the heater was blowing, really hot air. Looks like the compressor isn't coming on. Any thoughts, maybe a fuse, R134a. Is there a control valve that switches air/heat? Thanks for any input.

 

[Classicmm]

If the A/C clutch isn't engaging, it might be low on refrigerant. Gonna have to jump the low pressure switch to check level of 134a. Gotta use an A/C manifold gauge set to accomplish this and properly refill.
Good Luck