Ford GT AC Compressor Failure

Man, that sucks! I had a similar problem with my Ford Mustang, although mine's a bit newer. My air conditioning wasn't cooling either, and it turned out to be an undervoltage issue causing the compressor to not kick on. Did you check your battery and alternator? Maybe the system is detecting low voltage and shutting down the A/C to protect itself. I'm just guessing here but it's worth a look before you start tearing things apart.

Undervoltage, huh? Interesting. I didn't even think of that. So, when you say undervoltage, was it a simple fix like a new battery, or was it something more complicated? And how did you figure out it was the undervoltage causing the A/C to fail? Any specific tests you did?

Well, in my case, it wasn't just the battery itself, although it was getting old. The real problem was a bad connection to the alternator, causing the voltage to drop intermittently. The A/C was the first thing to complain. I used a multimeter to check the voltage at the battery while the car was running, and it was fluctuating way too much. Honestly, unless you're comfortable with electrical diagnostics, it might be best to take it to a workshop. They can check the whole charging system and pinpoint the issue.

Thanks a lot for the insight! I'll check the voltage and connections, but I think you're right; I might be in over my head. I'll probably take it to my local mechanic. It was indeed undervoltage! Apparently the belt tensioner was faulty, causing the belt to slip. The cost was 240€ including a new belt tensioner.