Freightliner Columbia A/C problem

I have a 2000 fld classic and sanden compressor. The old one went out so i replace dryer front expansion valve and compressor. Now the new one blows freon out relief valve on back of compressor any clues

 

2013 freightliner rollback air condition works but not blowing it out vents hear fan running like the vents are clogged

 

Check main air duct under dash and shutter doors

 

Has anyone on here had a problem with the plug going bad to the high pressure switch on a newer freightliner with a DD17? i was able to wiggle the plug and it would start working. also dont wanna stay cold when truck is at idle or in traffic.

 

Im having same problem did you figure it out

 

1

 

Did either of you figure this problem out?

 

How did you fix this problem?

 

Take cover off of front blower motor and tap on it.if bower motor is bad ac will not turn on. There is a diode thate goes bad in the blower

 

My issues is similar to the other guys, its spraying refrigerant outnthe back of the compressor