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|1,6,7,8 - Series and Mini Cooper General Chat related to models that do not fit into particular categories above. Please try to put your discussion in more appropriate sections. This section does cover the 1 Series, MINI Cooper and 8-Series vehicles: BMW 830i, BMW 840Ci, BMW 850i, BMW 850Ci, BMW 850CSi, M8, Alpina B12, BMW CS Concept and others.|
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I just got a BMW 740il. It drives great, but it is overheating.
I first noticed water leaking at the neck of the expansion tank. It turned out the small tube was cracked so I replaced the expansion tank. I figured this was the problem.
It wasn't. The car did the samething. After about a half mile of driving the temp needle goes a little past halfway and water/coolant starts to come out of the expansion tank cap!
I took out the thermostate and put it in boiling water and nothing happend.
Is the termostate on these car electric?...should the thermostate have opend when I put it in the boiling water?
Any ideas? Thank You, Les Marietta GA
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