Automatic Transmission Cooling Ford Taurus X I

GENERAL SPECIFICATIONS

GENERAL SPECIFICATIONS

Material

Material

TORQUE SPECIFICATIONS

TORQUE SPECIFICATIONS

Transaxle Cooling

The transmission fluid cooling system consists of the following

1. Oil-to-air (OTA) transmission fluid combo cooler
2. Transmission fluid cooler tube assembly
3. Thermal bypass valve
4. Transmission fluid cooler outlet tube
5. Transmission fluid cooler return tube

These vehicles are equipped with an external fluid cooler. The transmission fluid cooler is part of the A/C condenser and cannot be serviced separately. The cooler is mounted in front of the engine radiator. The cooling system also consists of a thermal bypass valve which is mounted on the transaxle main control cover. When the transmission fluid is below normal operating temperature, transmission fluid travels from the transaxle to the thermal bypass valve and back to the transaxle. When the transmission fluid is at or above normal operating temperature, the thermal bypass valve opens allowing transmission fluid to travel from the transaxle through the cooler and back to the transaxle. The transmission fluid cooler transfers heat from the transmission fluid to the outside air.

Scheme 21

Special Tools Illustration Tool Name Tool Number Vehicle Communication Module (VCM) and Integrated Diagnostic System (IDS) software with appropriate hardware, or equivalent scan tool

Scheme 22

Material

Inspection and Verification

1. Verify the customer concern by operating the vehicle to duplicate the condition.
2. If the inspection reveals obvious concern(s) that can be readily identified, repair as necessary.
3. Install new components if a transmission fluid leak is found in any of the transaxle cooling components.
4. If the concern(s) remains after the inspection, determine the symptom(s). Go to «Symptom Chart - Transaxle Cooling»(/ford/taurus-x/i-2007-2009/remont/automatic-trans/#automatic-transmission-cooling) or Go to «Symptom Chart - Noise, Vibration and Harshness (NVH)»(/ford/taurus-x/i-2007-2009/remont/automatic-trans/#automatic-transmission-cooling) .

Symptom Chart - Transaxle Cooling

Symptom Chart - Transaxle Cooling

Symptom Chart - Noise, Vibration and Harshness (NVH)

Note. Noise, vibration and harshness (NVH) symptoms should be identified using the diagnostic tools that are available. For a list of these tools, an explanation of their uses and a glossary of common terms, refer to NOISE, VIBRATION AND HARSHNESS article. Since it is possible any one of multiple systems may be the cause of a symptom, it may be necessary to use a process of elimination type of diagnostic approach to pinpoint the responsible system. If this is not the causal system for the symptom, refer back to NOISE, VIBRATION AND HARSHNESS article for the next likely system and continue diagnosis.

Symptom Chart - Noise, Vibration and Harshness (NVH)

Check Transmission Fluid Level and Condition (All Vehicles)

If the vehicle has been operated for an extended period of time, at highway speeds, in city traffic, in hot weather or while pulling a trailer, the transmission fluid needs to cool down to obtain an accurate reading.

The transmission fluid level reading on the transmission fluid level indicator will differ depending on operating and ambient temperatures. The correct reading should be within the normal operating temperature range.

Transmission Fluid Level Check

Note. The transmission fluid should be checked at normal operating temperature 80°C-93°C (175°F-200°F) on a level surface. Normal operating temperature can be reached after approximately 32 km (20 mi) of driving and can be checked using the scan tool.

Under normal circumstances the transmission fluid level should be checked during normal maintenance. If the transaxle starts to slip, shifts slowly or shows signs of transmission fluid leaking, the transmission fluid level should be checked.

Scheme 23

1. With the transaxle in PARK, the engine at idle, foot pressed on the brake, move the selector lever through each gear and allow engagement of each gear. Place the selector lever in the PARK position.
2. Wipe the transmission fluid level indicator cap and remove the transmission fluid level indicator.
3. Wipe the transmission fluid level indicator with a clean cloth.
4. Install the transmission fluid level indicator back in the transmission fluid filler tube until it is fully seated, then remove the indicator. The transmission fluid level should be within the normal operating range. Item Part Number Description 1 - Correct transmission fluid level at operating temperature 80°C-93°C (175°F-200°F) 2 - Low transmission fluid level 3 - High transmission fluid level

High Transmission Fluid Level

A transmission fluid level that is too high may cause the transmission fluid to become aerated due to the churning action of the rotating internal parts. This will cause erratic control pressure, foaming, loss of transmission fluid from the vent tube and possible transaxle malfunction and/or damage. If an overfill reading is indicated, refer to AUTOMATIC TRANSAXLE/TRANSMISSION - 6F50 article.

Low Transmission Fluid Level

A low transmission fluid level could result in poor transaxle engagement, slipping, malfunction and/or damage. This could also indicate a leak in one of the transaxle seals or gaskets.

Adding Transmission Fluid

If transmission fluid needs to be added, add transmission fluid in 0.25L (1/2 pt) increments through the transmission fluid level indicator tube. Do not overfill the transmission fluid. For transmission fluid type, refer to SPECIFICATIONS .

Transmission Fluid Condition Check

1. Check the transmission fluid level.
2. Observe the color and the odor. The color under normal circumstances should be a dark red color, not brown or black or have a burnt odor.
3. Hold the transmission fluid level indicator over a white facial tissue and allow the transmission fluid to drip onto the facial tissue and examine the stain.
4. If evidence of solid material is found, the transmission fluid pan should be removed for further inspection.
5. If transmission fluid contamination or transaxle failure is confirmed by the sediment in the bottom of the transmission fluid pan, repair the transaxle and clean the transmission fluid cooler tubes and the transmission fluid cooler.
6. If the transaxle is to be overhauled or if installing a new transaxle, the transmission fluid cooler must be backflushed. Refer to «AUTOMATIC TRANSAXLE/TRANSMISSION - 6F50»(/ford/taurus-x/i-2007-2009/remont/automatic-trans/#automatic-transmission-6f50) article.

Transmission Fluid Cooler

1. If installation of a new fluid cooler is required, refer to «CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS»(/ford/taurus-x/i-2007-2009/remont/manual-hvac-system/#hvac-control-system-general-information-and-diagnostics) article.

Transmission Fluid Cooler Tubes

Special Tools Illustration Tool Name Tool Number Disconnect Tool, Transmission Cooler Line 307-569

Material

Scheme 24

REMOVAL

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING AND LIFTING»(/ford/taurus-x/i-2007-2009/remont/hoistjack/#jacking-and-lifting) article.
2. Disconnect the mass air flow (MAF) sensor electrical connector.
3. Disconnect the engine breather from the air cleaner assembly.
4. Remove the 2 air cleaner assembly bolts.
5. Loosen the air cleaner outlet pipe clamp at the throttle body and remove the air cleaner and air cleaner outlet pipe assembly.
6. Remove the battery. For additional information, refer to «BATTERY, MOUNTING AND CABLES»(/ford/taurus-x/i-2007-2009/remont/body-electrical/#battery-mounting-and-cables) article.
7. Detach the wiring harness retainers from the battery tray.
8. Remove the 2 lower battery tray bracket bolts.
9. Remove the upper battery tray bolt and nut and remove the battery tray and bracket.
10. Compress the constant tension clamps and remove the transmission fluid cooler tubes from the transmission fluid cooler.
11. Remove the 2 secondary latches from the transmission fluid cooler tubes at the transmission fluid cooler thermal bypass valve.
12. Using the special tool, disconnect the transmission fluid cooler tubes from the transmission fluid cooler thermal bypass valve and remove the bypass valve-to-cooler transmission fluid cooler tubes.
13. Remove and discard the 2 transmission fluid cooler tube bolts.
14. Loosen the 2 fluid cooler tube fittings and remove the 2 fluid cooler tubes from the thermal bypass valve and the transaxle.
15. Inspect the transaxle case to be sure that the transmission fluid cooler tube seals and backing rings were removed with the transmission fluid cooler tubes and are not stuck in the transaxle case. If the transmission fluid cooler tube seals or backing rings are stuck in the transaxle case, remove the seals and backing rings.
16. Remove the 2 nuts and the thermal bypass valve.

INSTALLATION

1. Position the transmission fluid cooler thermal bypass valve in place and install the 2 nuts. Tighten to 9 Nm (80 lb-in).
2. Inspect the transmission fluid cooler tube backing rings and seals for damage and install new backing rings or seals if necessary. Lubricate the transmission fluid cooler tube seals with clean transmission fluid and install the backing rings and seals on the transmission fluid cooler tubes. Item Part Number Description 1 7D285 Seal 2 7J324 Backing ring
3. Position the 2 fluid cooler tubes on the transaxle and tighten the 2 fluid cooler tube fittings. Tighten to 25 Nm (18 lb-ft).
4. Install 2 new transmission fluid cooler tube bolts. Tighten to 9 Nm (80 lb-in).
5. Install the transmission fluid cooler tubes in the transmission fluid cooler thermal bypass valve.
6. Install the 2 secondary latches on the transmission fluid cooler tubes at the transmission fluid cooler thermal bypass valve.
7. Compress the constant tension clamps and install the transmission fluid cooler tubes on the transmission fluid cooler.
8. Install the battery tray and bracket, install the battery tray bolt and the nut. Tighten to 9 Nm (80 lb-in).
9. Install the 2 lower battery tray bracket bolts. Tighten to 9 Nm (80 lb-in).
10. Attach the wiring harness retainers to the battery tray.
11. Install the battery. For additional information, refer to «BATTERY, MOUNTING AND CABLES»(/ford/taurus-x/i-2007-2009/remont/body-electrical/#battery-mounting-and-cables) article.
12. Position the air cleaner assembly in place and install the 2 bolts. Tighten to 11 Nm (8 lb-ft).
13. Tighten the air cleaner outlet pipe at the throttle body. Tighten to 5 Nm (44 lb-in).
14. Connect the engine breather to the air cleaner assembly.
15. Connect the MAF sensor electrical connector.
16. Check the transmission fluid level and add transmission fluid as necessary.

See also:
• AUTOMATIC TRANSAXLE/TRANSMISSION - 6F50
• NOISE, VIBRATION AND HARSHNESS
• CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS
• JACKING AND LIFTING
• BATTERY, MOUNTING AND CABLES
• Symptom Chart - Transaxle Cooling