DeTaylor

I have tracked down the issue to be a bad connection in these connectors. Does anyone know how these come apart? I’m 15 finger pricks and 3 beverages in with no luck.

Can’t believe I didn’t even think of this. Will definitely do this tomorrow. Thanks!

So I’m still chasing down my overheating issue. Starting to think it’s all electrical. I hard wired my fan to do some testing and here is what I’m finding. Fan does not run unless I apply downward pressure to the harness connectors on the FCU. Never seen anything like this. I have two different FCUs and both are doing the same thing. i tried putting a little dielectric grease in there to see if it was potentially a bad connection and it made no difference. Thoughts?? video attached. 67927623766__E4430259-BD0D-42C3-9D34-4C8F10012732.MOV

@Fishfiles I’ll give it a look. I would guess that this would be negated since everything works when I ground out the wire from the backside of that harness.

That’s exactly what I was worried about. Thank you for relieving that stress! Going in the oven now

Female plug ends - Yes that is correct. I’ll remove the wrapping.

@AKATV here we go! Just to verify, the green plastic clips stay on?

I was avoiding this, but I think this is the next test!

Well my mysterious red light of doom continues. I was paranoid that I still had an issue when my light flashed at me the other day. Ordered a oil temp sensor from PSN and now the light is on pretty consistently. The odd part - my fan still isn’t kicking on. As stated above, my fan does turn on if I ground out the oil temp sensor wire. i don’t have any clue where to turn next. not sure if it matters - the light was not on right away. I had to hit a few bumps first (wiring somewhere???) and then the light kicked on.

Yessir. After reading through this thread that was the first thing I cleaned up. They weren’t completely clogged but there was a bit of dirt in there.

If no one wants it I’ll hold onto it. Just trying to help someone else out if I can.

Pretty sure the issue was a loose sensor. It occurred to me that this started after running through swampy woods last week. Plug was loose and dirty. Cleaned it up, took it for a hard 4 miles around the block and back through the woods for 15 min - no light at all. i am curious though if I should still check the oil pump. Got me worried now

I have an extra oem CDI box. I bought a new one from PSN but the actual culprit was the voltage regulator. Swapped out the parts and left them since it was already installed. $15 (includes shipping) to whoever wants it.

@AKATV is putting in the work! also incredibly happy with the work he did for me!!

Makes sense, atv doesn’t seem to be getting excessively hot in any way. Think the fan sensor may be the culprit. Might also explain the light being dim and coming and going.

So I grounded it and the fan did in fact come on. What does this mean then? Appreciate all the help!

ignore this - figured it out Another dumb question. Do you pull the wire off the sensor side or the fender side? Looks like someone has done some custom wiring on the fender side.

Looks like I know what I’m doing tonight. Thank you so much!

Might be a dumb question but do I have to prep the FCU in anyway before exposing it to 450 degrees of fury?

Oddly enough the reverse and neutral lights are working just fine. Even the temp light works great on start up. Only when driving does it seem dim. I’ll ground it out and see what happens. I really don’t think the fan will turn on lol I’ve checked quite a few times and never seen it move.

Without a doubt. Great group of knowledgeable guys.

I’m also facing over heating now. Red light come and goes pretty frequently the past week. Does the light get brighter as the temp gets hotter? My light, when lit, seems to be fairly dull but is nice and bright at start up. The light also goes away but then comes back shortly after (all in one drive). Going to start by cleaning the oil cooler and then start messing with the fan - I have never seen it spin but just now getting the overheat issue.

Sometimes it’s 2 cranks lol I’m not concerned. More concerned that she is starting to overheat. Fan isn’t spinning now.. always something.

Problem was actually the starter and solenoid. Ended up replacing both. Once again PSN came in clutch with the oem solenoid for $7. Atv fires up first crank almost every time now.

For $60 I completely agree. Starter ordered from D&B. Thank you for the company tip! Lots of parts that may come in handy in the future.