Hey guys. I new here, but I have a question about my AC. It just stopped blowing cold air yesterday morning. The clutch is not engaging and it is blowing hot air. When I attempted to recharge with AC Pro, it was in the red. Computer test stated that Freon pressure was high. I know that I should check the fuses (Which I have) and the relay (cannot find). I have seen parts that are called Compressor Relay, but I cannot find the location of it in the truck.

ANY help is appreciated since I just spent $$ on the power steering pump and NOT looking to spend too much more.

 

Having high pressure will prevent the clutch from engaging as will low pressure. Your truck will either have a dual pressure switch or will have separate low and high pressure switches.

You really should consider taking this to a shop that has a manifold gauge set to monitor both the high and low pressure sides as well as the recovery, evacuation and recharge systems to get the system properly charged. I'm not sure where you live, but I think just about everywhere it would be illegal to vent the system to the atmosphere to try dropping the pressure to an acceptable range.

-Rod

 

 

Too much refrigerant, or , a blockage in the system somewhere. Gauges would tell the tale.