Any A/C Techs?

[Baron Von Crowder]

im betting it's the heater/ac controls on the dash. My wife's highlander does that same shit, and it's a known issue on them.

[46Tbird]

Google-fu says it is likely the "Evaporator Temperature Sensor", which has a habit of telling the system that the evaporator is below optimum temperature and kicks off the compressor. I'm going to try replacing that and see how it works out.

*edit - thanks to shumpertdavid for pointing this out*

[BP]

Something like 330psi on the high side and 55psi on the low side. those numbers wouldn't look to bad on a 100 degree day in texas, but it was closer to 82 outside. I recovered the system and only removed about .6 lbs out of a system that held 1.25lbs. My point is that gauges aren't a sure fire way to determine the charge amount.

My guess would be that someone didn't pull down a vacuum before charging it. Lots of shade tree guys do a/c repair without a vacuum pump of any kind.

[garycrist]

I have always tried to replace those plastic caps with metal ones.
The only purpose of a shrader valve is to let one add to the system,
be it freon air in one's tires etc. Or to leak.
The primary seal is those caps everyone throws away.

[lowthreeohz]

Moms boyfriend had the same issue and it was a thermostat inside the air box under the dash that was intermittent.

[JETFAST]

evacuation & recovery, vacuum, oil & die injection, recharge, and leak check for 125 in irving.