1993 BMW 525 over heating

ralliw51 · Posted at Tue Jun 10, 2008 5:58 am

Engine Cooling problem
1993 BMW 525 6 cyl Two Wheel Drive Automatic 235000 miles
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my car overheats while standing. when i am driving at full speed, everything is ok but when i stop at the light or when i am in stop and go traffic it overheats.
And i have also noticed that my heater is not working.

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Dr. Hagerty · Posted at Tue Jun 10, 2008 6:13 am

The over heating issue can be caused by the fan clutch not engaging. The heater issue can be caused by the heater valve.

fortunato747 · Posted at Sun Jun 22, 2008 8:36 am

These problems could be related. Possibly check for clogged passageways in radiator & heater core. Other possibilities include clogged/or broken shut thermostat. First check for circulation of coolant in warmed engine,this determines the status of open/closed thermostat.Second check for sediment in bottom of radiator.This would be most prevalent in clogged radiator/heater core.If someone ever used a stop leak in the radiator, it can clog passageways.
Good Luck.