Hi, so I have a friend who's car is like a 1995 automatic. The car will have a rough idle and sounds like it wants to stall out. Even when it's been driven, the car sometimes stalls at a standstill! I don't understand what's happening, my guess it the transmission is out of wack, but I wouldn't know how to fix it. At high speeds the engine does fine, but it's when it's standing still is when it has problems. Turning on heat or A/C makes the problem worse. What could be the problem? and what would the solution be? Thanks for any help!