AC pressures
#1
AC pressures
I am trying to find out what the normal High and Low side pressures are for my 97 GMC Sierra, 5.7l. I put a gauge set up on and got 35 on the low and 200 on the high. Just trying to figure out why it will not get cold, it is cool, but not cold. Starting at step one.
Thanks
Thanks
#2
Those pressures, to me, look about perfect.
Your problem could be inside your HVAC unit/box. You might check your blend door. It's possible that you're actually mixing heat in with your cool air off of your evaporator.
If you can, put a thermometer in your center panel vent and see what the temp is. It should be about 45+/- degrees; as per your pressure readings.
TLDR version: My guess is its your blend door.
Your problem could be inside your HVAC unit/box. You might check your blend door. It's possible that you're actually mixing heat in with your cool air off of your evaporator.
If you can, put a thermometer in your center panel vent and see what the temp is. It should be about 45+/- degrees; as per your pressure readings.
TLDR version: My guess is its your blend door.
#5
found the problem, after moving blend door actuators around, by the way totally sucks to get to the on in the dash. After swapping them around, found out that was not the problem, the problem is actually the dash switch, after switching it to max and back a couple times real quick, the actuator moved all the way and allowed the full cold air to come through. arggg, now I guess I gotta find a new switch.
Well that solves the problem of why it was not getting cold. No to figure out why the voltage drops while idling in first gear. Vots go back up when driving, or sitting with the truck not in gear.
Its always somthing
Well that solves the problem of why it was not getting cold. No to figure out why the voltage drops while idling in first gear. Vots go back up when driving, or sitting with the truck not in gear.
Its always somthing