Thread: W201 Heater Issues
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Old 02-08-2011, 05:12 PM
erikas3's Avatar
erikas3 erikas3 is offline
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Join Date: Oct 2010
Location: Orland Hills, IL
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Thank you for your reply. Could you explain how I could see if this is the case/ eliminate it?

Today I tested the heater valve and it is not the cause of this issue. I am now to believe that it is either a clogged heater core, an airlock or somehow faulty/clogged aux water pump (even though it seems to be buzzing and working).
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