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Discussion Starter #1
I have 2016 RXS 860I that will rev up only to 3000 RMP but not much more. The engine idles fine and runs smooth. Gas is good, plugs good, air cleaner Ok. Took the gator to local JD shop without any fix. They believe I had a bad ECU/Throttle body as they could not code read it for codes. New ECU installed and they could read ECU without any increase in RPM. All looked normal with no active codes or stored. Fuel pressure tested 45psi. Throttle actuator & engine timing all in specs. Any thoughts?
 

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Has the Gator ever over heated?
 

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1. Is there some kind of governor apparatus on that engine that needs adjustment?

2. When our gator does that, the parking brake apparatus is usually stuck.
 

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Discussion Starter #6
The parking brake works fine. When applied the RPM drops and will increase when released. The RPM will not increase much above 3000RPM under load driving.
 

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Ok then check down on the stator there is a sensor hooked in which is speed sensor, which acts like a crank sensor. you can ohm it 110 plus or minus 10. if bad you have to replace stator all together. if the engine rpm displays ok on screen then it is probably ok .
 
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