Question on BMW 3-Series E36 Coolant Flush

dear wayne i have a 1995 bmw 525i that i just replaced the radiator the water pump thermostate and clutch fan on and the damn thing is still blowing cold air and sometimes overheats i have bled the system and still nothing please help

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This post was auto-generated based upon a question asked on our tech article page here: Pelican Technical Article: BMW 3-Series E36 Cooling System Flush

[Wayne 962]

Blowing cold air instead of hot air through the heater? Sounds like a broken heater valve, or a massive air bubble in the system. I'd bet on air bubble. If you are having trouble bleeding the system by normal means, you can try pulling a vacuum on the system using a port attached to where the radiator cap fits. This is a standard procedure for Porsches, but it can also work for other cars that are having issues. Also try bleeding the car many times, at cold and warm too. It's probably just a bubble in there. Make sure the heater and fan are set to ON when you bleed.

- Wayne