[TAtech]

The water pump separator plate will normally cause overheating in traffic driving at lower speeds. Two things come to my mind that haven't been mentioned, the first and I'm sure it has been checked by one of the shops, is make sure the fans are wired correctly and are directing air across the radiator instead of pusing it forward. The next thing that hasn't been mentioned is, if the car has an automatic transmission, the trans could be overheating causing excessive heat in the engine cooling system from trans. cooler in radiator.