a/c & effects from oil/trans coolers.

G37Some

@spooler. got serviced today, pressure was low so they did the evac and recharged.

Drove for an hour, air got hot again for a few mins and then back to cold... waste of $160 today. FML, looks like ill go back when I get a chance.

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Felix 808

Sounds like you have a leak. They should have pulled a vacuum & monitored it for pressure increase after they evac'd before just charging it. I would take it back to them.

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Ridgerunner

Had similar issue on My 98 Ranger. Freon was good. A/C mech said an interlock prevents A/C from coming on if engine too hot. Turns out my problem was thermostat was sticking and not opening all the way. Nice cheap fix. So could be thermostat or flaky temperature sensor thinking it is hotter than it is and forcing shutdown on A/C compressor.

Over 100 here in central Arkansas today and Z had no problem keeping it cool.

TechnicZ

Hi. Sorry to hear you're having AC issues. Honestly since you said you installed an oil cooler and trans cooler it can be safe to say that your condenser is not getting enough air flow which cools the temperature of the refrigerant coming from the AC compressor. Your refrigerant is getting too hot and your ECU shuts down the compressor until temperatures regulator to avoid excessive pressure build up.

Several things to try and help:

Try moving the coolers around and/or installing a higher flowing fan to help pull air through.
Also remove any debris in front of the condenser.
Also make sure your lower engine cover is still installed (this helps create a negative pressure zone behind your radiator to aid in air flow.)

Good luck!