The Fix to Jaguar's Rattle Noise

A clattering/knock/rattle noise may be heard from the engine in 2014 Jaguar F-Type, 2013-2015 XF and XJ vehicles equipped with a 3.0L supercharged engine. This may be caused by a torsional isolator and/or the torsional isolator spring support shaft wear, causing excessive backlash in the supercharger drive.

Information courtesy of Mitchell 1

Mike Mavrigian

Dec. 12, 2022

2 min read

Remove the supercharger drive belt and rotate the supercharger pulley by hand. If there is a clunk/knock noise or significant free play when turning the pulley before the rotors start to turn, install a supercharger spring isolator kit (see TOPIx workshop manual, section 303-12).

If any of the following symptoms are present, replace the supercharger assembly:

- The pulley does not rotate freely (sticks/roughness felt in bearing/difficult to move)

- The blades are damaged

- The customer reported excessive “whine” noise

Supercharger spring isolator kit............C2D40425

Gasket (two)..............................................C2Z17249

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.