whatever is wrong with your car is the same problem im having. i have the diode out now and its working, but its not good to leave it like that it protects the compessor and other electical parts. they put it in for a reason so it is ment to be there. if you leave it out you could have a dead compessor in a week, or a dead car if it shorts and cooks the computer or a wire in the dash. you might be safe for a few times on the really hot days but i wouldnt run it that long without it. this week im going to rewire the compressor in hopes that maybe its just a bad wire and see if that fixes it. but keeping it out isnt the best idea.