Ford F-150 Front Wheel Drive Noise
Some 2006-2020 Ford F-150 non-Raptor trucks equipped with a TOD (torque on demand) transfer case and 4A selection switch may exhibit a grinding/clicking/ratcheting noise from the front wheel area.
This may be due to partial engagement of the integrated wheel ends (IWE). To correct the condition, locate the vacuum supply line between the source vacuum and the IWE check valve. Remove the vacuum supply line and install vacuum caps at the IWE check valve and the vacuum source. Vacuum cap kits are available as P/N W716372-S300.
Locate the vacuum line from the vacuum source to the check valve.
Cap off the line at the vacuum source and at the IWE check valve.
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 MavrigianMike 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.
