Mechanics

OVERHHEATING

1990 BMW 520

Engine Cooling problem
1990 BMW 520 6 cyl Two Wheel Drive Manual

My BMW 1990, GOT RECENTLY AN ENGINE OVERHEATING. I HAVE CHANGE THE THERMOSTAT, AND I HAD MY WATER PUMP CHECKED AND ALL THE LINES AND TUBES ARE OK AND NO LEAK.
I DO NOT KNOW WHAT IS THE PROBLEM WHY IT TURNED HOT AFTER 10mn. AFTER THE ENGINE RUNS? AND ALSO WHEN I TURN THE HEATER INSIDE THERE IS NOT HEAT JUST A COLD AIR EVENTHOU THE ENGINE IS BOILING. PLEASE INEED HELP TO SOLVE THIS PROBLEM.
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Cherif. Hachemi
May 24, 2009.




There is an air bleeder screw on the thermostat housing, open it when filling the system to get the trapped air freed from the system.

Dr. Hagerty
May 24, 2009.


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