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Re: Air in Radiator??? (archive)

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Posted by Scott on June 30, 2001 at 11:19:00:

In Reply to: Air in Radiator??? posted by Taz on June 27, 2001 at 18:33:11:

Yes the stick coming out of the expansion tank cap should look like the diagram beside the cap when the coolant is less than 80 degress F. If this has the proper level then I suspect the coolant level switch is either bad or not connected properly. This had to be removed when the expansion tank came off. Make sure that the switch was put back properly. It connects on the backside of the expansion tank. This is most likely your problem. If it was air the light would go off when it was cold and back on again while driving. Normal driving will drive the air out. The procedure for getting the air out is to open the cap, let the car warm up until the thermostat opens and then rev the car up to 4000 a couple of times and then fill the expansion tank to the proper level. Good luck.

97 740il

My check coolant light is on. I had to replace the radiator,
in a 97 740il. May have air in the system, I have driven it now for a couple of weeks and the light will not go off.
The bleed valve i have opened when the car is semi hot to see if i can get the air out, or to come to the top, but no success. By the way should the stick coming out of the filler be sticking out an inch or two? Please advise!


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