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Volkswagen
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1999
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Passat Syncro Wagon (3B5) V6-2.8L (AHA)
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Repair and Diagnosis
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Engine, Cooling and Exhaust
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Cooling System
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After-Run Coolant Pump
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Description and Operation
After-Run Coolant Pump: Description and Operation
An additional electric pump for continued coolant circulation (
After-run coolant pump
-V51-) is installed in vehicles in hot countries.