Yamaha RHINO for sale
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By redneckred
I have a 2012 Bennche Bighorn 700X. I bought it used. It had been sitting in a field for several years untouched. I put a new sun gear in the shifter, new shifter linkage due to the old one having been patched, and a new battery (and of course fresh fuel). The machine cranked and ran beautifully. I had it over a year and then the machine quit running. As it would not stay cranked, I narrowed the problem down to a bad IAC valve. I replaced it and it ran as good as new/old. Fast forward, the machine started to act like reverse wasn't catching and would not always back up when in gear. Then forward quit. I assumed a bad CVT belt and got one. Started removing the bolts from the cover and (3) just turn in the housing without coming loose. (2) are on the bottom, so very little room to do anything with them. I tried cranking the machine again to see the belt move since I can move the cover enough to see the belt and now the machine will not crank. It turns over fine. It gets gas to the injector and has spark. I can spray cleaner down her throat and she would run until it ran out. I have replaced the IAC twice and put a new injector with no change. I went out and put the old injector back in to see if that made any difference and, well, it did. I tried to crank the machine and the starter is stuck trying to turn the machine over even with the key off. I have to disconnect the battery to stop it. Before I shoot this thing, what am I missing? Is this an ECM problem or something else I am not seeing? Been dealing with these Gremlins for over a month now and weeds are starting to overtake the motor due to it not moving. I would love to get the thing running first and any ideas of getting those CVT cover bolts out would be extremely helpful. Thanks in advance.
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By Dennis
I have a bulldog i bought from home depot in 2013. In the last season it started refusing to shift from neutral to either forward or reverse. I changed the trans axle fluid and made sure the cables were lubricated and free. With a lot of coaxing, I can sometimes get it to shift. once I start driving it, things improve until I let it set awhile. Any suggestion on where to go from here?
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By aefron88
This post will explain how to hook up your PC to the ECU of a Hisun/Coleman/Etc UTV to be able to read error codes & engine parameters for troubleshooting purposes.
This is applicable to all small engines using the Delphi MT-05 ECU. This should cover all fuel injected Hisun models, as well as various other Chinese FI engines, as the Delphi MT-05 ECU seems to be the favored ECU solution.
Even though we get actual engine error codes to display on the dash, sometimes we have “pending codes” (not yet confirmed by the ECU) or other intermittent issues that are hard to diagnose, for example a poorly connected sensor that may give intermittent false readings, or a sensor that’s putting out bad date, but not bad enough for the ECU to realize.
The setup requires 2 cables, which are available for around $25 combined, a PC with a USB port, and some charityware software called “HUD ECU Hacker”. This gives the same functionality as the $300 dealer code scanner for a fraction of the price.
In searching I found info about HUD ECU Hacker, but I have yet to see info anywhere about how to hook it up to a Hisun, so I took the leap and bought some cables, and made it work. I will show a step by step of how to do so in post two.
I will be breaking this down into 2 posts:
Delphi ECU Info & Overview (This post) System setup & use Delphi ECU Info (Skip ahead to the next post if your eyes glaze over technical details)
The Delphi MT-05 ECU was developed to allow small engines to use fuel injection. A fuel injection system requires feedback from various sensors to operate efficiently. This feedback allows the adjustment of ignition timing, fuel injection volume, etc to efficiently and cleanly produce the most power possible from a given engine.
The MT-05 ECU has a number of sensors that are required for proper functioning including; Coolant temp, crankshaft position, intake temp, intake pressure, exhaust O2, throttle position, as well as some other optional sensors that are used on more complex vehicles.
From the sensors the ECU adjusts: Fuel injector timing/pulse, Idle air control valve, and ignition coil
The Delphi MT-05 puts out diagnostic data, however it is not ODB2 like a modern car, where is where it gets tricky reading it. There are three options, there is an old 16 bit piece of software Delphi has that is not able to run on a modern computer, there is the motorscanner tool for dealers ($300), or there is freeware HUD ECU Hacker with the proper cables.
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By LarryLarryQuiteRepairy
Hello,
Background: Bought a used 2012 700, added 2 small LED lights, wiring for a sprayer and changed front CV axles.
Had no electrical issues until recently. The old battery stopped charging so we got a new one, Rhino still wouldn't charge it.
-Started next day, drove 15-20min, then out of nowhere the check engine light came on and temp too. 4WD started to automatically engage and disengage repeatedly. Charging display started jumping all around between 11 to 13 to 15v.
-Relays, fuses, and battery connections seemed good.
-Continuity on rectifier would jump btwn OL and 00.0
-Rectifier wires from stator all read 20-21v at idle
-Rectifier diode test had 1 bad reading. So, I replaced it with a new one (but still using original plugs)
Started it up, still shows no change (12.1v idle, 12.8 with some RPM)
Also, I feel like now I maybe also smell burning plastic?
Does anyone have experience with this problem or have a recommendation of where to go next?
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By Hugh
My 2018 Hisun sector crew engine cut off after about 15 minutes run. There is no indicator of what is wrong, no error code just die and won't restart until it cool down. I notice that the fan is not running but the temp indicator is on low temp, no overheat indicator. I checked the radiator fluid, it is cool to touch.
Cooling fans are working, I can hear it running once awhile if I can get the engine warm up enough. Thank you for all the help.
Hugh
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