Thread: Duovalve or thermostat? Low heat 97 E420
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Old 01-26-2012, 03:59 PM
berryrice berryrice is offline
95 E320 w124 Wagon
  
Join Date: Mar 2010
Location: Minnesota
Posts: 63
Sounds Like T-stat to me too. My duo/mono valve was spotty...symptoms were low heat from the vents at idle/low speeds and heats up at highway speeds.
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