Over heating

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   I hope you guys can help me with this
When my car starts the temp needle rises quite quickly from cold to midway on the gauge and there it'll stay quite happily, infact I've only ever known to rise higher than midway on a couple of occasions and it wasnt by much. 
Even though I've had the car for 4 months now I've never been caught in  traffic heavy enough to cause a prolonged standstill until yesterday - after about 5-6 mins the needle started to creep up until it was almost in the red (this caused the engine to sound slightly ruff, like it was pinking).  Once I was in clear traffic again the temp dropped back down to normal.
Before I bought the car the radiator and thermostat were replaced but until yesterday I've had no reason to suspect that there could be a fault with them. The fan is working ok and the themostat hasnt required topping up since i got the car, so I know water isnt leaking through head gasket ( or I hope!).
With the cars being so well engineered i cant believe this is normal, any advice please.....
thanks
West
e34 525 sport

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west Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 24-January-2003 Location: United Kingdom Status: Offline Points: 37	Topic: Over heating Posted: 22-May-2003 at 17:36
	I hope you guys can help me with this When my car starts the temp needle rises quite quickly from cold to midway on the gauge and there it'll stay quite happily, infact I've only ever known to rise higher than midway on a couple of occasions and it wasnt by much. Even though I've had the car for 4 months now I've never been caught in traffic heavy enough to cause a prolonged standstill until yesterday - after about 5-6 mins the needle started to creep up until it was almost in the red (this caused the engine to sound slightly ruff, like it was pinking). Once I was in clear traffic again the temp dropped back down to normal. Before I bought the car the radiator and thermostat were replaced but until yesterday I've had no reason to suspect that there could be a fault with them. The fan is working ok and the themostat hasnt required topping up since i got the car, so I know water isnt leaking through head gasket ( or I hope!). With the cars being so well engineered i cant believe this is normal, any advice please..... thanks West e34 525 sport

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Xeus Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 21-October-2002 Location: United Kingdom Status: Offline Points: 22	Posted: 23-May-2003 at 23:17
	Is your car automatic? I could be wrong but I think the transmission fluid is cooled via the radiator and it could be causing the excessive heat. On the other hand, since you say there are no leaks, it could be some kind of blockage or air in the system. If you have air in the system its not good and it will lead to engine damage. I would advise getting the system checked.