everything you need to know.....http://www.bimmerfest.com/forums/showthread.php? t=713745
Go through the usual suspects... thermostat, water pump, radiator, fan, etc... The link Tom posted is will actually apply to most BMWs! Great information there!
Once I start it up and let it run for a while it just start running hot and give a burnt smell.
Thermostat is probably shot. Is the fan coming on?
I had it to the shop they took the thermostat out . But it still run hot very fast
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