A/C Compressor Cycles When Heater Is On

Just curious, but is this normal? I was pulling in the other day and heard a "tsss" and then a few seconds later, it sounded like it released. It kept doing this. I popped the hood and noticed that the A/C compressor pulley would start spinning with one "tsss" and then would stop about 5 to 10 seconds later with another "tsss." This kept happening until I turned the heater off (vent, floor, mixed, or def mode did it).

Any ideas? My A/C doesn't work...hasn't for a while. Also, it kind of chirps/ticks/squeals when the A/C pulley is spinning.

Thanks :SNSign:

Can anyone at least test theirs?

Kilgore Trout said:

Most people do not understand the climate controls in the Mustang...

The a/c compressor runs in every position except the positions immediately to the left and right of off (straight up).

This is the way the system is designed.

Click to expand...

Thanks Killy!

It turns out I do have A/C. I tried it today and it was blowing cold...last time I tried to use it it didn't blow cold.