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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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Old 01-24-2009, 04:17 AM   #1 (permalink)
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over heating

i have a 2001 740 il and it over heats when i get up to 60 m/hr but not all the time. could it be the radiator. it has radiator fluid in it and the only indications it get is from the dash when the temp rises.
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Old 01-24-2009, 05:03 AM   #2 (permalink)
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Could be many things, but only at 60mph strange, I would go for the viscous fan coupling, are you losing fluid?

After that, waterpump (check for leaks now),check hoses, radiator etc etc, a leak should leave a whiteish residue which is the antifreeze dried out.

Oh, how do you know you have fluid in the rad as you are unable to see in to the rad???

I stepped in a plate of Pasta the other day - now I have to worry about my Carbonara footprint!
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Old 01-26-2009, 01:08 PM   #3 (permalink)
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Bear is an unknown quantity at this point

Overheat at 60 MPH points more to a water pump (IMO) that a visc ous fan clutch, in my case ('88 750) she would overheat a idle and be fine at speed, replacing the fan clutch solved that problem.
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