Hi everyone! Long time, no post!
Well, there was a long delay because in Phoenix, AZ we had a good long cool spring. But summer is upon us and today it was 113F. To remind you, my engine was stalling sometimes when I engaged the compressor and when it was hot out, usually after recently turning off the engine for a short period of time.
I called the shop that installed the A/C when the problem first started, and they said they'd take a look at it, but we decided to wait until it got hot so they could observe the problem. I finally brought it in yesterday.
They told me they didn't find anything wrong. They told me the aux. fan wasn't working properly, which is wrong -- it works fine, and I've fixed it myself so I know it works.
They told me that the valves needed adjustment and the compression was therefore too low, but we adjusted our own valves and I think we did it well, although I am not going to argue this one too much. Either way the car seems to run fine and has decent power. (
Here's a video of me accelerating without the A/C in case you want to know how it runs.)
They told me that they removed a little bit of freon because the pressure was 400lbs per sq. inch (this is what the owner told me but he was upset with me at the time because I didn't want to pay for the service visit -- they'd promised it would be covered under the warranty of the installation of the new compressor they'd installed earlier this year for $900, so I didn't really want to argue with him).
Finally, they told me they increased the idle.
Now, the car seems to idle a bit faster, and the compressor load seems to be much less when I switch it on. However, the air is not as cold as it was before (although today was unusually hot at 113F).
I bought some gauges and am ready to play with them. I would love to get this system optimized. Leathermang, you've been bugging me to get gauges on, so I"m ready now!
Thanks for everyone's help again...