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Home >> Ford >> 2009 >> Flex Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 792 (Engine Cooling System - F250-F550) >> Removal And Installation >> Thermostat - 5.4L, 6.8L >> Removal And Installation

Removal And Installation

WARNING: This page is about a different car, the 2007 Ford Pickup, 2007 Ford F550 Super Duty, 2007 Ford F450 Super Duty, and 2007 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
  1. Drain the engine cooling system. For additional information, refer to Cooling System Draining, Filling and Bleeding  in this article.
  2. Remove the air cleaner outlet pipe. For additional information, refer to INTAKE AIR DISTRIBUTION AND FILTERING article.
  3. If servicing the thermostat housing, disconnect the upper radiator hose from the thermostat housing.
  4. Remove the 2 bolts, position the thermostat housing aside and remove the thermostat. Discard the O-ring seal.
    • Inspect the mating surfaces. Clean the sealing surfaces with metal surface prep.
    • Install a new O-ring seal.
    • To install, tighten to 10 N.m (89 lb-in).
  5. To install, reverse the removal procedure.