Resolving Ford Mustang Surge Condition

This bulletin applies to 2015-2019 Ford Mustang GT350/GT350R vehicles.

Oct. 11, 2023

This bulletin applies to 2015-2019 Ford Mustang GT350/GT350R vehicles. The vehicle may exhibit a hesitation or surge 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 nut. Remove and discard the output shaft flange nut following steps one, two and three in workshop manual section 308-03B, Transmission Output Shaft Flange nut.

PARTS NEEDED:

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

Bolt and washer, M10 x 1.5mm (3)....FR3Z-4B496-B

Bolt, M12 x 1.75 x 27mm (4).............N800594-S101

Bolt, M10 x 19mm (2)........................W717822-S439

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

About the Author

Information courtesy of Mitchell 1

Information for Technical Service Bulletins comes from ProDemand, Mitchell 1's auto repair information software for domestic and import vehicles. Headquartered in San Diego, Mitchell 1 has provided quality repair information solutions to the automotive industry since 1918.