TSB's

Another Reason to Whine

Some 2013 Ford Mustangs and F-150 trucks built on 4-1-2012 and through 7-1-2012 equipped with a 3.7L engine and 6R80 transmission may exhibit a whining noise from the transmission torque converter housing area during acceleration. The noise will go away after the converter clutch locks up.

1. Verify the build date. If within this range, proceed to Step 2. If not, refer to the workshop manual section 100-04 for normal diagnostics.

2. Road test the vehicle. If you hear the whining noise, proceed to Step 2. If not, proceed with normal diagnostics.

3. With the vehicle in neutral, position it on a hoist.

4. Remove the transmission. It is not necessary to drain the transmission fluid or to remove the transfer case on 4x4 models for this procedure.

5. Remove the torque converter using Essential Special Service Tool ESST 307-091.

6. Remove the input shaft oil seal using ESST 308-375 and 100-001 and discard the seal.

7. Install a new front pump seal using ESST 307-556.

8. Install a new torque converter using ESST 307-091.

9. Install the transmission.

10. Add Mercon LV ATF to the specified level.

PARTS

BR3Z-7902-C……….Torque converter

6L2Z-7A248-AA…….Seal – converter pump

W715131-S437……..Transmission cooler line bolt (Mustang)

W715798-S437………Transmission cooler line bolt (F-150)

XT-10-QLV……...…….Mercon LV ATF

7L1Z-7J227-A…….….O-ring – cooler line (4 required)

W714689-S437………Torque converter nut (4 required)

N800594-S100……….Drive shaft bolt – Mustang/F-150 (8 required)  4WD (4 required)

W13078-S439………..Mid shaft bearing bracket bolt (2 required)

7L1Z-4B496-D…….…Front driveshaft bolt – 4WD (3 packages required)

7L1Z-4B496-C….……Front driveshaft bolt – 4WD (2 packages required)

W520514-S440………Exhaust nut – F-150 (4 required)

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