450 es Angle sensor question....I know I know - Honda ATV Forum
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post #1 of 7 (permalink) Old 01-19-2012, 07:38 PM Thread Starter
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450 es Angle sensor question....I know I know

I know this one has been done to death and I have fixed these before but this one has me scratching my head. My buddy is is having issues with his ES not shifting so I told him to replace the angle sensor after inspecting a few things myself. So he did and it worked for a bit then he had the same problem only worse. With the original sensor it will shift into first and reverse. With the new sensor it will now only shift into reverse and what seems to be half way into first then it pops back to neutral.It is throwing the 3 blink code for ES problems. We have tested the wiring , the battery is at 12.84 volts or something like that and we have checked all of the fuses. He also bought a new shift motor thinking that may be the problem. I now think the new angle sensor that he bought is toast. Any ideas /input would be great. Thanks
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post #2 of 7 (permalink) Old 01-19-2012, 08:36 PM
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Have you tried adjusting the clutch free play to see if it will help?

Most 4-wheeler problems are caused by a loose nut connecting the handlebars and the seat!!

You only need two tools in life -- WD-40 and duct tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape.
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post #3 of 7 (permalink) Old 01-20-2012, 05:52 AM Thread Starter
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I adjusted the clutch last night because I noticed it was jumping forward when we shifted it into 1st. There wasn't much improvement after adjusting it...if any. Aside from plowing snow this machine hasn't been used hard. Helmut thanks for the reply. Any other ideas??
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post #4 of 7 (permalink) Old 01-20-2012, 03:52 PM
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Have you followed the troubleshooting chart in the service manual, for code 3?

Click the image to open in full size.
Click the image to open in full size.

Most 4-wheeler problems are caused by a loose nut connecting the handlebars and the seat!!

You only need two tools in life -- WD-40 and duct tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape.
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post #5 of 7 (permalink) Old 01-20-2012, 06:45 PM Thread Starter
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I went through most of it last night. I still have to check the voltage. Kind of ran out of time..had to get the kiddies to bed.
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post #6 of 7 (permalink) Old 03-24-2012, 08:27 PM Thread Starter
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FYI this turned out to be a broken bolt in the trans. Haven't posted here in while just thought I'd give an update. Maybe this will help someone in the future.
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post #7 of 7 (permalink) Old 03-24-2012, 10:54 PM
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Broken bolt? can you be more specific as to where? this intrigues me as to why it wouldnt shift.
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