Looking for motor for Qlink Frontrunner 500
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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 Stan Morton
My 2018 XG-850-SL starter died yesterday. The old part number from Kubota is E7153-11732 which has been superceed by part # EG881-63010. I am looking for an aftermarket starter because the Kubota retail price for the starter starts at $550 and upwards toward $850. If anyone has gone down this road before and has found an aftermarket starter ~ please share with me. We own a ranch and this thing is used every single day and is sorely missed when it is down for maintenance. Kind Regards, ~ Stan
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By William Carberry
I have a MSU 500. I will start and run but requires basically full throttle to move. Does this machine have a drive belt? If so how difficult to change?
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By Tim Barbero
I left my 2020 axis 500 UTV parked under the carport for about 6 months and when I went to start it recently a squirrel has built a nest under the throttle body and chewed through the efi harness. I stripped all the wires back and reconnected them with waterproof butt connectors. The problem I have is there is one blue wire with a red stripe coming from the main harness this wire has 5 volts dc showing on my multimeter but there are two blue wires with a red stripe coming from 2 different sensors on the throttle body. I looked through all of the bits and pieces of wiring left behind and there’s no indication that the three wires of the same color were all tied together. Any help with this issue would be greatly appreciated.
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By Tim Nelson
Ok guys, my turn...
Working on my neighbors 2017 Massimo MSU-500. Initial complaint was it would start and run for about 10 minutes and the just die. He replaced the fuel pump and still had the same issue. I stopped over one day to look at it and saw that it had codes flashing on the dash; 505, 336 and 337. We decided to get a new stator/crank sensor. Took it apart installed the new stator/crank sensor and nothing. It won't even start. I checked the pins on the crank sensor plug and one was in the wrong place, so I repinned it and it still won't start. I double checked the connectors and all is good. I checked the wires from the ECU to the coil, good. It appears to have spark every once and awhile but not enough to start. I replaced the coil with a known good one and still nothing. I bought the cables and downloaded the ECU hardware and everything looks good. I pulled the timing cover back off to check the flywheel keyway, it is good. I checked the timing and timing chain, good. I checked the valve lash, good. I have to put it back together but just wanted to post in case there is something else I should check before hand. I checked the 9 pin connector and it is clean. I have battery voltage on the purple wire and pins 15 and 18 on the ECU. I pulled the air filter off and I am going to put a new plug in it just for the heck of it. What ECU inputs would prevent it from starting? Why would it now not start at all after replacing the stator/crank sensor? It has to be something simple. Any help would be appreciated.
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