E46Fanatics - View Single Post - check engine light comes on and off as well as radiator light.help!
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Old 11-13-2012, 01:40 PM   #2
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Join Date: Mar 2007
Location: the barnyard
Posts: 2,458
My Ride: '79 Massey Ferguson
You need to find the leak. Pressure testing the system is helpful.

Or, replace everything. A low coolant level will only trigger the level light, not a CEL...my guess is that your thermostat is faulty.
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