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2018 Massimo MSU 500. Cuts out at 18 MPH.

Ironeagle

By Ironeagle
in Massimo UTV SxS Forum

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Ironeagle Newbie

Ironeagle

Posted
Posted

 My 2018 Massimo MSU 500 was operating just fine.  I parked it for 2 weeks in my shop now the unit starts and runs great but at 18 MPH it cuts out. It's not the seatbelt safety switch that engages at 10 MPH if it is unbuckled. I purchased a new ECU but that did not resolve the problem. No error code is presented. I reset the ECU replaced the fuel injector, coil, sparkplug and spark plug wire. Same response. I don't mind replacing faulty components but don't want to chase parts and hope for the best. Any ideas??

  • 3 weeks later...
Joe Breaux Mentor

Joe Breaux

Posted
Posted

I assume you have checked fuel filter and pump pressure?  I have the same MSU 500 2018 and that has never happened on mine..A dozen other problems but not cutting out at 18mph..is it possibly overheating and dropping power ?  Does it do it in high and low gear or just one?

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