Mountaineer 2WD V8-4.6L VIN 8 (2006)
3. This transmission is equipped with a thermal bypass located in the case. This thermal bypass valve will shut off fluid flowing to the fluid cooler if
the fluid temperature falls below normal operating temperature. For this reason the following 2 steps must be carried out before checking the fluid
level or following any repairs that open the transmission cooler tubes. This procedure makes sure that the cooling system has been purged of any
air in the system.
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Using a diagnostic tool, verify that the transmission fluid temperature is above 93°C (200°F).
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With the transmission selector lever in PARK increase the rpm to 2,000 and hold for one minute. This will circulate the transmission fluid
through the torque converter and the cooling system eliminating any trapped air in the cooling system.
4. Using a diagnostic tool, verify that the transmission fluid temperature is between 80°C - 85°C (175°F - 185°F).
5. With the transmission in PARK, the engine at idle (600-750 rpm) and foot pressed on the brake, move the range selector lever through each gear
and allow engagement of each gear. Place the transmission range selector lever in the P position.
6. With the engine idling (600-750 rpm) in PARK, position it on a hoist.
7. Remove the fluid fill plug fluid level indicator assembly located on the passenger side front portion of the transmission case.
8. Separate the fluid level indicator from the fill plug.
9. Wipe the fluid level indicator clean. Reinstall the fluid level indicator only back into the fill plug hole to check the fluid level. Repeat this until a
consistent reading is established.
