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Message: <blockquote data-quote="Grand" data-source="post: 426800" data-attributes="member: 6501"><p>I had similar problem with my E39 previously. When the car is idling or stationery, the first symptom is you feel the air cond not cold. If you still don't move or still stuck in a jam, the temp will start to rise. Found out later that when car is stationery, the air cond fan (or whatever you call it) is not moving, thus you don't get cold air from air cond vent and causing the engine temperature to rise. Sent the car to naidu and he couldn't figure out what is the problem except to say could be some faulty electrical items which need time to sort out. Found out much later (at least applicable to my car) that when you are stationery, try to press the accelerator a bit (of course with your left leg depressing the brake very hard) and when the rpm goes up, you will know that the air cond fan has begun to run as you will be able to feel the cool air coming in. Temp wouldn't rise as the air cond fan would also have the effect of cooling the engine bay. That's why when your car is moving, you wouldn't have this problem as the constant pressing of the accelerator and high rpm would keep the air cond fan operating. No harm giving it a try. :smokin:</p></blockquote><p></p>