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By ToughLuck
I have a 2021 Massimo MXU 1000. Last winter the front drive shaft sheared off inside the motor and it was cheaper to buy a new motor than to take it apart in order to remove the front drive shaft that was broken inside the case…
Now it is running rich, seems to maybe be geared too high, does not accelerate well once you hit about 28mph. I’ve replaced the O2 sensor. MAF is next (I accidentally ordered the wrong one, but when I removed the old one you can clearly smell fuel).
I’m not a motorhead but I can turn a wrench. Any ideas how to get this motor optimized? The motor has about 300 miles on it. I broke it in as recommended in the manual.
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By Paul L
When I am driving at 30 to 40 mph on the highway, the display will change from H (high) to R (reverse). It does not actually shift into reverse, it seems to shift into neutral and starts losing speed and the gas pedal has no effect. After the rpm/speed drops for 5 seconds or so, it changes back to H and runs fine for another minute or so. You have to try to drive it at less than 5000 rpm or so, to try and keep this from happening. Any ideas on what the problem might be? It only happens at the higher speeds.
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By Homeowner A
I was randomly and briefly able to connect to my Coleman UTV 400s ECU the other day twice and haven't been able to since. When I was able to access it, I found the following codes and wondered if anyone may know where I should start or what I should look at?
P0031 - O2 Sensor Heater Control Voltage Low
P0107 - Manifold Absolute Pressure/Barometer Pressure Voltage Low
P0113 - Intake Air Temperature Sensor Voltage High
P0118 - Engine Coolant Temperature Sensor Voltage High
P0650 - Malfunction Indicator Lamp (MIL) failure
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By Joe Breaux
Got a 2017 Massimo MSU500 UTV with thermostat malfunction.. hot light comes on in 4-5 minutes but radiator is ice cold... where exactly is it? The hose neck on the head has nothing in it. I was told it was down by oil drain plug.. only thing I see is water pump.. Is in inside pump housing? Cant find any exploded diagrams that show it.. how to I remove it? any help would be appreciated
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By Homeowner A
Is there a code reader available for the Coleman UTV 400? I tried using the HUD ECU Hacker software and cables/adapters but no luck OBD to delphi 6 pin and KKL VAG as well as ELM327. Will not connect. I was able to get it to connect randomly a couple of times, but haven't been able to since. I was able to clear and read the codes briefly. I'm aware of the Tiny Scan 301 but it doesn't seem to be readily available. There's a few out there but they are expensive.
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