Compressor?

[walth]

Static charge 88psi @ 80deg outside temp, at idle the compressor goes from 90psi to 110psi, the low side goes from 70psi to 30psi. Cycles every 10 seconds. Compressor replacement time? 2002 Blazer.

[Tim]

Does it have the correct refrigerant level? With the low side dropping you have pumping action going on!

[walth]

I guess the best way is to have it evacuated and weighed then refilled. Unless there is a way to determine how much to add.

[Tim]

You must have the correct refrigerant level in to determine any issues you may be having.