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post #1 of 2 (permalink) Old 02-06-2006, 03:34 PM Thread Starter
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cooling system problem

2001 330i, 52K miles:
Saw steam from under the hood, then temp guage ran to hot range. I quickly turned off the car and pulled off of the road. The next day, I found that that coolant expansion tank split vertically. I replaced the tank then bled the system to make sure all was full of coolant.

Current problem is that there is no heat coming from the climate control system and the temp guage will go to hot after about 5 minutes of driving. There are no signs of undue pressure building in the system as I have checked. Could this be just the thermostat and or water pump or is there something that I have done wrong in the reinstal of the tank?
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post #2 of 2 (permalink) Old 02-06-2006, 04:08 PM
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sounds like there is still air in the system....

run it with the cap off...not driving

this allows the air to get out

also..are there any bleed valves around...and turn the air/heat onto full temp to open the valve then run the engine for a while....keep a good check on the temp gauge

another way is to lift the expansion tank higher than everything else...then open the bleed screws

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