[mthomas58]

Originally Posted by onewhippedpuppy

So my Saab A/C is blowing hot, and the Saab BBSs suck. I turn to the braintrust at Pelican.....

Compressor engages, ACC shows zero faults, evaporator fan engages, evaporator looks clean and intact, flapper door moves as it should. Blower air is about ambient, larger return hose is warm. Compressor is 50k and 4 years old. Freon was drained, vacuumed down for 30 min, then recharged. Approximately 40 psi low and 180 psi high, at about 90 deg ambient. Several hoses have been replaced, it seems to hold pressure just fine.

My only thought is that I f'ed it up by adding a couple cans of freon prior to picking up the gauges. Wal Mart stuff, I think it had oil and stop leak in it. When I hooked up the good gauges, I found that the low side was about 55 psi. I drained and vacuumed the system, but possibly some of the crap from the Wal Mart stuff did damage?

My thought is the expansion valve. From my reading, it can cause similar issues to what I'm seeing. Everything else seems to be working fine. Am I on the right track?

Try posting here: Moderators are good about responding quickly to questions.

http://www.autoacforum.com/categories.cfm?catid=2