Jamie,

Yours is a different situation than Diesel Giants. Since it is kicking in for a second or two, yours has a slipping belt for whatever reason. There is a sensor on the compressor that can tell if the belt slips. If it detects slippage it shuts it down until engine is started again.

Turn the compressor by hand and ensure that it is free. If it is free then start checking your belt for oil or your belt tension for looseness.

Good luck,