A/C Issues. Checked Fuses/Relays/Fan, What next?

[AEMalakai]

Traced all the lines, there is no switch on any of the low or high side lines.

On the LUV engine there is a pressure sensor sensor located on the engineblock/compressor itself. I couldn't reach it.

Chevrolet Sonic Repair Manual: Air Conditioning (A/C) Refrigerant Pressure Sensor Replacement (LUV) - Cooling - HVAC


Changed the thermostat last night, that was a pain in the ass job. Took a combination of every single stubby, universal, hand ratchet I had to get it done.

 

[AEMalakai]

Update, re-vacuumed and refilled, this time use a can of PAG oil+refridgerant since the something sounds kindof crusty (can't tell if its lifters, valves or compressor).

Planning on getting the system drained and recharged properly on Wednesday.

Oil is less than 1k miles old. I was planning on a spark plug and transmission fluid change in the next few weeks as part of my 50k service.

Also my after I got it working I turned the car off and came back an hour later, I ended up with a bunch of powertrain codes and a code I can't seem to clear, U0100.

Turns out the throttle body intake was loose. Tightened it, cleared the codes, reset the battery. U0100 keeps coming back instantly but it might just need to complete it's drive cycle.

 

[AEMalakai]

Final update. Compressor needed to be changed. Was goodwilled by dealer.

Not happy that this happened on a car with this low miles. But there it is.