Thread: Auxiliary Water Pump W126 1985 300SD DIY
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Old 01-23-2005, 09:53 PM
Lycoming-8 Lycoming-8 is offline
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Join Date: Aug 2002
Location: NE Okla
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As I understand, the pump is there to provide adequate water flow to the heater core when the engine is at idle or low rpm. At road speed it is not really required.
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1961 190Db retired
1968 220D/8 325,000
1983 300D 164,150
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