Question about 2003 Volkswagen Passat
I have a massive coolant leak from the rear of the engine. One mechanic told me it was caused by the Heating Valve. Is this hard/expense to replace?
What is a heating valve please ,never heard of this terminology ,a heater take off yes but a valve ?well if does have one i have never seen one ,most common cause is a core plug or in american freeze plug but a heating valve ?? couid be a heater hose perished and split i agree but a heating valve the heat on these cars is shut off by closing a flap on the heater inside the heater unit so this repair if its just a heater hose shouldnt take long unless its a core plug in which it may involve a longer job
Posted on Nov 27, 2013
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Posted on Jan 02, 2017
Could be just the OIL COOLER. VW IS CORRECT.
If the oil cooloer fails internely you will have a mix of coolant and oil. In the engine and in the Radiator,
But not to say the other guys were wrong...
Posted on Jun 18, 2009
when you say left side are we talking passanger side or drivers side if drivers side which is my guess most likely your waterpump seal is leaking
Posted on Mar 22, 2009
The MK3 VW's are prone to failure of the "coolant flange", which is located to the right of the valve cover, and will have 4-5 hoses and or sensors sprouting from it.
I'd be willing to bet that this is the source of your leak, not the cam pulley.
The part is inexpensive.
Posted on Mar 15, 2010
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