Homeowner A

Haven't been able to find a video on it. How difficult is it to do and any tips, pics, diagrams, videos on it?

This doesn't work.

I've been having misfire issues with my UTV 400 when it gets warm and I've thrown all kinds of parts at it so far with no permanent resolution. Today I removed the O2 sensor and it is black on the end. To me that means it's running rich and/or the sensor isn't working. I replaced the sensor with a new one and will see how it goes I guess. With EFI, I'm wondering why the sensor would be this way with low hours and mileage? Is there a way to adjust or lean out fueling on these? Thanks in advance.

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

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.

Can someone please help with this? I've downloaded the HUD ECU tracker software. I have the 6 pin to delphi OBD2 adapter, a VAG KKL OBD2 cable and I already had an ELM327 for another vehicle. I was able to get it to connect randomly the other day twice with the ELM, but I couldn't tell you or consistently reproduce the conditions that got it to connect. I ordered the VAG KKL and tried that and can't get it to connect at all. I've tried the 327 again and can't get that to work either.

Trying to do this, but it won't connect. Is there a trick to that?

What is 7 in this parts diagram? https://parts.colemanpowersportsusa.com/parts/utv_side-by-side-parts/outfitter-400_ut400/muffler-parts

No oil leaks

Fresh 93 octane. No smoke on start. What outlet exhaust if so, yes it has pressure.

Coleman UT 400 has a strong sulfur/emissions smell from exhaust all the time. Kind of like it’s running rich and a catalytic converter is trying to make it run cleaner so it smells bad. Also misfires when warm. Idles fine. Full throttle fine. In between it cuts out. Do these have catalytic converters? Almost acts like it might be clogged if so.

Could someone please recommend a reputable shop to troubleshoot and repair a Coleman UT 400 in the DFW TX area?

Have a Coleman UTV 400 that cranks, runs, drives well until it gets warm and is put under load. Light throttle or full throttle it doesn't bog, but it will cut out mid throttle if you move the pedal quicker than it seems to like for example when you're getting ready to go up a hill, but if you immediately floor it, it will do just fine and not cut out. It's random if and when it's going to do it, but is consistent in that it happens only when hot/full operating temperature. I've replaced the injector twice, same with the spark plug and tried different heat ranges (NGK 7,8 and 8 iridium), replaced the fuel pump, adjusted the valves, checked air filter which is like new, changed the oil, replaced the fuel filter. No check engine light. I don't have a code reader for this. Initially I thought it might have a head or head gasket issue as when I got it, the oil was over full, very runny like water milky and it was smoking. I've changed the oil since then twice to clear and clean everything out, and it seems to be good. Coolant stays the same level and so does oil with no changes in consistency or need for adding more. Had I think 7-9 miles when I got it and now has about 77. What should I try or consider next?

Replaced injector and it has been running well until yesterday. Now it’s cutting out again mid throttle when it gets up to full temp. Possibly misfiring too did smell some unburnt fuel at one point when it would cut out. Light throttle or flooring it and it does fine. I replaced the injector again but no improvement. Any ideas? What should I look at next?

Maybe I'll try that at some point thanks