If this is the wrong forum, sorry.

I have two questions and I will be as clear as possible. I'm having a couple issues with my A/C, first one being the compressor cycling. When I am driving my car I get a surge from the engine and I can hear the a/c compressor cycling. This is NOT when the car is sitting at a stop light or something, its actually when I am driving the car. I tested the low side and it was at about 30psi, 75 degrees outside. What would make this happen? Low Freon, the cycle switch? Please help, so annoying.

My second question is in regards to the compressor as well. The compressor whines when I have the air conditioning on, if I turn the A/C off the whine goes away. Any ideas, advice? Just an fyi the air DOES blow cold, but something is going on. Any help would be great, thanks much!

Pat