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?