Cascadia A/C weirdness

I'd check the wiring harness connectors at the ac compressor and the high pressure switch and anywhere else you see a connector that may be involved to carry the signal to the compressor

I'm guessing when it wasn't blowing cold air that the compressor clutch was not engaged?

Could they have put too much refrigerant in causing the system to protect itself?

Could be anything like a bad temp selector dial/switch. Is the "snowflake ligh" lit an the ac switch (button)?

Did it gradually blow less cool? Or was it instantly? If gradually, this indicates the evaporator core is freezing over. This happens a lot when they run low on refrigerant. But if this was the case there would be little air coming out the vent outlets.

 

My '12 is doing the same exact thing. I haven't done any troubleshooting on it, because it comes back so quickly. Just so many other pressing maintenance items occupy my home time.

 

It will probably do it again and on the worst possible day.

Does the system ever kick the engine fan on when idling or driving at low speeds (as it generally should if operating correctly and on hot days)

 

I drove a 12 and a 16. I think it's a glitch in the ecm. Resetting the knobs was always the trick. Didn't happen often. And at least it worked which is better then taking to repair shop.

Get used to it and don't complain. It's a quick fix.

Fuel sending units is another fault. Replaced 3 times in 1 year. Have no idea on the last year since I left them.

 

WTH are you guys talking about "resetting the knobs" and such? This is all new to this dumazs driver.

 

The reset cant be done till the park brake is on; fan off, heat to full and direction control to last setting anticlockwise then push the recirc button and the ac button together, hold them down till they start to flash and release. You'll hear the actuators and control flaps moving about, and when the lights go out its reset.

But I doubt that's your ac problem, (although the hvac units do wear out and they are expensive and 9 hours to change out) I had a load of problems with mine until recently, first thing to check is the rear outlet, when the front goes weak does the back still blow cold?