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Discussion Starter · #1 ·
Hey guys, not new to the forum just had to create a new account due to my computer croaking. Anyway my ATV sat for a few months and I went to crank it and heard a clicking over the battery. Removed the seat and noticed a rats nest over the battery and wires. The top 3 wires of the middle harness on the ECM were chewed in half as well as a green and yellow wire running together into a quick connector of some sort. I spliced them back together and replaced the battery. I knew it was weak because cold weather made it not want to shift gears like it should, but only in cold weather. Warm weather had no issues. Now it wont shift out of neutral. I crank it, shift up, the dash goes from N to 1 and the atv jumps forward like it should, but then it falls back down into N. I hear the motor shift and it sounds reasonably normal. But no error codes or blinking gears on the dash. Could this be a shift sensor possibly fried from the short out in the wires when i tried to crank it? I've never replaced the sensor or the shift motor, and I still had the factory battery in it. 250 hours on machine, 2008 honda 420 ES 4x4 i bought new from the dealer. Please give me a starting point?
 

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welcome back LOL
as for things, the battery might have been OK< as one of the big issue's with e shifts is the grease in the shift motor's gets THICK over time(all the mroe so in cold weather) and doesn't allow things to work very well
so you need to take apart the shift motor and clean and re grease it with good low temp white lithium grease
see this tread
http://www.hondaatvforums.net/forum...8080-fixing-electronic-shift-es-problems.html

next, have you made sure all fuses are good, as odds are if mice chewed thru them, they might have blew?
 

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welcome back LOL
as for things, the battery might have been OK< as one of the big issue's with e shifts is the grease in the shift motor's gets THICK over time(all the mroe so in cold weather) and doesn't allow things to work very well
so you need to take apart the shift motor and clean and re grease it with good low temp white lithium grease
see this tread
http://www.hondaatvforums.net/forum...8080-fixing-electronic-shift-es-problems.html

next, have you made sure all fuses are good, as odds are if mice chewed thru them, they might have blew?
You don't take the shift motor apart there is no grease in it --- remove the gear case that the shift fits into -- clean the old grease out replace it with all temp white Lithium grease -- if you take the gears out to clean them -- refer to the service manual to replace them in place.
 

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welcome back LOL
as for things, the battery might have been OK< as one of the big issue's with e shifts is the grease in the shift motor's gets THICK over time(all the mroe so in cold weather) and doesn't allow things to work very well
so you need to take apart the shift motor and clean and re grease it with good low temp white lithium grease
see this tread
http://www.hondaatvforums.net/forum...8080-fixing-electronic-shift-es-problems.html

next, have you made sure all fuses are good, as odds are if mice chewed thru them, they might have blew?
You don't take the shift motor apart there is no grease in it --- remove the gear case that the shift fits into -- clean the old grease out replace it with all temp white Lithium grease -- if you take the gears out to clean them -- refer to the service manual to replace them in place.
Sorry brain fart on my part, but I did give the link with HOW to LOL
and I was close, just a little different but same issue, BAD old grease!

I never owned a E shift so, my bad!
 

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While off it never hurts to clean up the shift motor I find that the brushes can stick, but definitely clean in the shift cover.


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Put a new battery in it.. Change shift sensor, and try it.. Low batteries are bad for all this electric stuff and shift sensors go out all the time. And ya you can take off the shift motor and make sure there is not water in it ect ect.. My bet is shift sensor and battery!! Also take the manual shift bar that is located under the seat and shift in manual to rule out the shift motor gears are note stuck.. My buddies rancher got stuck between gears and wouldn't shift it got bound up. (because the shift sensor was going to (#(#T). Note the manual shift bar attaches to a 3/8s square nub on the front of motor left side (i think!)
 

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O ya the shift sensor is on the back of motor and to change it easy, Tip quad up on its side if you can or put it on car ramps.. But if you tip on its side give it a minute back on all 4s to let any oil drain back down.. Die electric grease the connections and on the seals on shift sensor just for good measure!!
 

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you can test the shift angle sensor with a multimeter to determine if it is bad. I would not replace it without testing it first.

set your meter to ohms, and move the angle sensor slowly back and forth, you should have a nice steady up and down reading from your meter, any erratic, high or low readings while sweeping the sensor arm back and forth it needs replaced.


I am more lead to believe you have a bad connection or rats have frayed/chewed through other wires.
 

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Discussion Starter · #9 ·
Ok so i removed the angle sensor and cleaned the points due to some corrosion build up. It will now shift into 1 about every 5th or 6th hit of the up shift button. Once it goes in it cycles through all gears and drives just fine. I did remove the cover and clean/grease the gears as someone suggested. I ordered a new sensor just for good measure (never hurts to replace it anyway) I hope this fixes the problem and I'll be sure to let everyone know. And i hope that NAPA battery i bought lasts longer than the reviews I read on it lol. Thanks
 

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battery life can be longer if you use a battery tender, all the more so on E shifts and more modern bikes that suck more juice that plain janes did of the past!
 

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there is a guy in Louisiana that makes and sells shift levers for the ES's , I know 2 people who have bought them , the were like $50 at first and he went up to $77 just recently , but I have heard that the shift shaft is not up the the foot lever and will not last long ----- also I hear of people removing the cover and swopping over to the foot shift shaft , I don't really know about what's involved but heard it wasn't that much of a job
 
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