If you can get hold of a good scanner you can see the counts on the actuators and watch for fully closed and fully open. It will also set a code if the command and actual counts are not meet.
If a blend door is sticking a indicator would be.
Shad-tree approach.
set the temp mode fully cold Shut off the engine let it set for 5 min.
Start it does it blow heat HOT heat before it starts blowing cold air.
Feel the inlet and out at the evaporator do they both feel COLD about the same temp.
Do you have a pressure gauge reading you can post.
I am putting a compressor on a 04 pontiac GP today if it does not COOL I am going to be looking for HELP
:cry: It has a variable displacement compressor with a TXV :twisted:
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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