Leaderboard

I have recently encountered this problem on my 2022 Massimo 410 t-boss. High and low gear work fine. Dies instantly as soon as it is given any throttle in reverse and speedometer is haywire. For six months I have checked everything from fluid levels, to cable adjustments, to throttle position sensors, to O2 sensors. I have reset the CPU all to no avail, until recently. There is a connection located under the output shaft of the transfer case, that is pretty well hidden, that vibrated loose and became uncoupled. As soon as this was reconnected reverse works flawlessly, speedo is accurate and there is no more surging in high gear. I hope this helps as the dealers and Massimo support are of very little assistance.