I recently LS Swapped my truck and had issues with the compressor kicking off due to pressure going way up on the high side and you guys helped me get that part starightened out(Big Thanks!!), but now I've noticed when I switch the air on and noticed that it almost stalls the motor, when I cut the a...

Well as hard as it is for me to wrap my head around, I got the fans coming on off the a/c request wire, and its acting fine now. Thanks for the help guys!

One of the guys at the shop said he had to go through the evacuation, vacuum and recharge process a couple times to get air out of one he was working on. It was a Robinair unit but I'm not sure of the model number. Could this be air in the system or not likely?

That is correct, the LS pcm turns the fans on, and the wiring for the a/c is from the 94 harness and does not cut the fans on with a/c signal. Even if the truck is warmed up and the fans come on when starting, it still doesn't keep the clutch locked in. It goes through the engage disengage back and ...

The fans don't turn on until 185 degrees, and the pressure stabilizes before it gets over 120 degrees, usually a couple minutes after it starts. Could it be the orifice tube stopping up possibly?

It has twin electric fans

I recently swapped a 5.3 LS Motor in my 94 Tahoe, and at first I had a line kinked and the compressor wouldn't stay engaged. I fixed the kink and recharged the system and now when you start it up after it has sit for a little bit the high side pressure will go up to 450 and disengage the clutch unti...