Ford Surge Caused by Output Shaft Flange

Jan. 18, 2023

This bulletin applies to 2015-2019 Ford Mustang GT350/GT350R vehicles. A hesitation/surge may be experienced with no DTCs present. This may be accompanied by an inoperative cruise control system.

This bulletin applies to 2015-2019 Ford Mustang GT350/GT350R vehicles. A hesitation/surge may be experienced with no DTCs present. This may be accompanied by an inoperative cruise control system. This may be due to a transmission output shaft flange nut that has become loose, allowing the output shaft tone ring to move in relation to the output shaft, causing an erroneous signal. To resolve the condition, replace the output shaft flange.

P/N                                       PART

4R3Z-7B340-AA..............output shaft flange nut

FR3Z-4B496-B................bolt and washer M10 x 1.5mm

N800594-S101...............bolt, M12 X 1.75 X 27mm

W717822-S439..............bolt, M10 x 19mm

TA-25-B..........................Motorcraft Threadlock and Sealer

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