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Registered
Join Date: Sep 2007
Posts: 26
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check coolant level message
I have a 1992 325i. I just replaced the coolant reservoir and the coolant level sensor. I thought that this would fix the check coolant message. I bled the system, but I am still getting the message. Any ideas on what else could be the cause. Thanks.
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03-16-2009, 11:10 PM
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Registered
Join Date: Sep 2005
Location: Sacramento CA
Posts: 1,147
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Before I gave up, I would try bleeding it a couple more times. I just put a water pump and thermostat and reservoir on my daughter's '97. I ran it through one bleeding procedure per the book, and then warmed it up. I don't even have any heater yet, so there is still a lot of air in there.
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03-17-2009, 05:41 AM
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Join Date: Feb 2006
Posts: 12
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My 1987 325is low coolant level light was on because the wire was broken going to the sensor. I fixed the wire and all is well.
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03-20-2009, 03:49 PM
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Join Date: Sep 2007
Posts: 26
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Thanks all. The electrical connection was the fault. I found some information that others may find useful. You can check the sensor with an Ohm meter. When the float level isup, the resistance should be not more than 1 ohm. In the down position, it should be at least 40 K Ohm. The float should rise in the coolant and fall when the tank is empty.
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03-23-2009, 10:50 AM
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