Engine swap done!!

[LS6_Silverado]

Hey,

Well i got my truck retuned and my p0443 dtc went away now im just trying to figure out my a/c problem. I going to work on it tonight.

[r6z4o6]

Also when i turn on the A/C it activates and starts blowing out hot air.

So you stick your head under the hood, engine on and have an assistant set a/c to MAX or RECIRC or whatever and you HEAR and see the a/c clutch engage?

1. How long between cycle times does it stay off?
2. How long does it stay on for?
3. Does the temperature get really hot when you change the temp knob away from cool?
4. Does the temperature change when you say, shoot the air only out your window defrost?
5. Did you poke any holes in your condenser behind the radiator? If you have a hole somewhere and ALL the freon is gone, your low pressure switch should prevent the compressor from self destructing due to lack of PAG oil.
6. If you have a temperature blend door being funny around the heater core, it could pour boiling hot lava air all over you even though it got cooled by the evaporator core just because the heater core gets it last. whoomp-whoomp.

[LS6_Silverado]

Ok i checked the freon i have all my freon. The heater works just fine, it gets very hot. I will get someone to turn my a/c on so i can hear it after work today to see if the clutch is engaging, which im pretty sure it is because when i turn on the a/c i can feel the trucks rpms change.

The condensor usally drips condensation right? well i left the a/c on for 15min and it wasnt even cold. Whats the temperature blend door and where is it?

Thanks

[r6z4o6]

The evaporator core drips condensation, which is in your dash by the heater core. If it is humid out it will drip more than usual. Do you have electric fans? They should both come on with a/c. But you say they are blowing hot, so probably not that. The temperature blend door will usually be around the heater core and evaporator and direct air over it or divert air away from it. I never had very good luck working on those lol i know i have seen some wonky ones when i used to work on cars and lets say my "fix" would have them coming back every season change Maybe the computer isn't commanding the temp blend door to open?? i have not gotten to look inside those computers, so i dunno how much a/c is commanded by them. Or maybe your a/c head unit is bad. Does anyone you know have a a/c head unit you could swap in the hopes of condemning yours?