Not sure if ive posted this in the correct place, but i have a problem with the AC on my 89 Allante.
Havent used the AC for a while, but did today, and found that the compressor is cycling way too fast....1 second on, 2 seconds off.
No codes are being set at all, like low refrig. etc.
Any ideas please on what could be causing this?
Thanks in advance.

Low refrigerant pressure. It probably needs a partial charge. Fairly common in the spring actually.

Thanks Katshot, ive checked it again, and you are correct...its now showing B447 code, Low Refrig.