Ford Surge Caused by Output Shaft Flange

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

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.

Mike Mavrigian

Motor Age Editor

Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety of  specialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.

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