I have a 92 190e 2.6. The engine seems to overheat when the car is not moving like at a stop light. The temperature is normal when the car is in motion. Also, when I rev up the engine for about 10-15 seconds when the car is parked, the temp indicator comes down fast to normal position. I took it to a mechanic and he replaced the fan clutch. Unfortunately the new clutch didn't help either. I was wondering if someone else had similar problems??? Any advice or help would be greatly appreciated.