hi
i currently own a 96 318is e36
im suffering with the heaters, really become a pain in the winter that there is basically zero heat i will get a blast of warm air for about 15 seconds at motorway speeds then that is it the temperature sits fine on the guage and the pipes going to the heater control valve air boiling i have flushed the heater core and cooling system about 10-15 times my thought is obviously the heater control valve but why am i getting a blast of hot air sometimes then nothing? really would appreciate your reply as this is getting to me now thanks :
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Pelican Technical Article: BMW Heater Valve Cleaning/Flushing