Nissan Reports Thunk Is Normal

Dec. 11, 2020

This bulletin applies to a number of Nissan vehicles equipped with a V6 engine, including 2013-2018 Altima, 2012-2014 Maxima, 2016-2019 Maxima, 2013-2017 Quest, 2013-2019 Murano and 2013-2019 Pathfinder. 

This bulletin applies to a number of Nissan vehicles equipped with a V6 engine, including 2013-2018 Altima, 2012-2014 Maxima, 2016-2019 Maxima, 2013-2017 Quest, 2013-2019 Murano and 2013-2019 Pathfinder. 

A single thunk-type noise may be heard during the first few accelerations of the day due to a two-piece front engine mount design. The noise is considered “normal.” 

The mount also is designed with built-in free play that is normal. If the mount has 5 mm vertical free play or a “single event” thunk sound during the first few accelerations of the day and does not occur at any other time, this is normal. Do not replace the engine mount. 

If a shift shock condition is present when shifting from Park into gear or between any combination of gears, this condition is likely due to transmission line pressure and not engine mount movement.

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.

About the Author

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.

Sponsored Recommendations

Learn how electronic parking brake actuators have replaced manual systems and now play a key role in advanced safety features like automatic emergency braking. This WIYB Training...
Not all fuel injectors are created equal. In this WIYB Training Series, we compare Standard® Fuel Injectors against OE, low-cost imports. See why precision engineering and rigorous...
Carrying active OEM subscriptions for all manufacturers is not possible for many shops. However, access to this software is required for certain modern vehicles and repairs, and...
Learn how to properly lubricate your AIRCAT air tools to keep them running at peak performance. Discover essential daily maintenance and storage techniques, along with the right...

Voice Your Opinion!

To join the conversation, and become an exclusive member of Vehicle Service Pros, create an account today!