PeachParts Mercedes-Benz Forum - When closed, should a heater valve block all coolant flow?

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Tinker

08-27-2002 03:16 PM

When closed, should a heater valve block all coolant flow?

When I checked mine (87 190e) out of the car with vacuum applied, it will flow just a trickle of fluid. Is this normal or should it seal completely.

Tinker

mbdoc

08-27-2002 05:28 PM

There have been 3 different brands of these heater valves on the W201 chassis. ONE brand didn't seal off the water completely, BUT it should have.

joe p

08-28-2002 08:19 AM

Same here, I've never seen one completly seal. :-(

Joe

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