As your patient was told by her ObGyn, it is safe to use combined birth control pills and Mirena at the same time and this practice may be helpful with regard to the irregular bleeding, prolonged bleeding, cramping or pain that can be associated with Mirena in the first months after Mirena insertion.
RE: AC compressor cycling. IP: Logged. Message: I have an '03 QC 4.7 v8 and the a/c unit will cycle when it's set to defrost and high heat on the temp gauge, a/c off. I read a post last night that talked about pulling the a/c defrost fuse # 24 (on the my truck) during the winter months to keep the a/c from cycling.
A misfiring cylinder in a four-cylinder engine is, pardon the pun, hard to miss. The loss of 25% of the engine's power output is the equivalent of a horse trying to run on three legs. The engine may shake so badly at idle that it causes vibrations that can be felt in the steering wheel and throughout the vehicle.