Driveline thumping noise during acceleration. The thump can be felt through the driveline continuously under load, occurring in a rhythmic “thump, thump, thump” pattern every two seconds during acceleration.

A persistent driveline thump was felt under load and acceleration. The issue was initially suspected to be within the transmission or transfer case due to the sensation of load loss and re-engagement. Despite extensive component replacement, the condition remained, requiring further investigation into driveline and mounting components.