All of a sudden the bike quit running. I found the main fuse (30 amp) blown. I replaced it but it lasted only seconds after starting it. I checked for obvious shorts such as frayed wires or loose connections and found none, can anyone help.
blowing fuses on my 350 Es
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Welcome to the forums. You may have a bad regulator/rectifier. The hot wire runs through the main fuse and then to the regulator/rectifier and on through the keyswitch and back to the sub fuses. It also runs from the keyswitch to the display, speed sensor, and ECU.
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Not sure on these but on an outboard you can check the continuity. It should only go one way. Put a VOM meter on ohms and put the leads to both wires and then swap. You should only get a reading on one. If you get a reading both ways or neither way it is bad.
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i don't see how a bad reg/rec will cause a fuse to blow ?..the purphase of the reg/rec is too only recharge the battery and supply power to the lights and so forth..if the reg/rec went out..the only thing i know of..is it will not recharge the battery..and all the power will drain from the battery...once that is gone..then all the power comes from the stator..and if the reg/rec doesn't get replaced..this could cause the stator to burn out soone or later. fuses blow because there is a direct short to ground..means..there is a hot wire somewhere on the wire harness that is touching bare metal.
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Yes, Shadetree, I know what a regulator/rectifier does. They can short out on the inside and cause the fuse to blow. I've seen it happen quiet a bit.
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i never have..not saying it won't happen..lol.
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Keep working on ATVs and you will eventually see it. LOL.
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lmao..what..14 yrs aint enough ?????..lol.
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Evidently not. LOL.
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bahhhhhhh..you just have worse luck than me !..lol.
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Yeah, that could be. LOL. I've seen it happen probably 2 or 3 times, and if I remember right, twice on a 350 Rancher and once on a 450 Foreman.
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all the more reason i'm trying to sell this 2000 trx350tm rancher..lol. i hate them..i'm old school all the way when it comes to a honda..i know the new hondas can't hold a candle to the old ones ..spec the trx300's !.
This just happened to me on my '03 TRX350FM yesterday. I started smelling something electrical getting hot and all of the sudden everything died. Check the fuse panel and the main 30 amp fuse had blown. I replaced the fuse and it started right up, moved about 3 ft and the new fuse blew.
I started searching for a short with my Fluke meter, but when I got back to the rectifier I could smell that it was burned.
Pulled the plug on the rectifier and put another fuse in it, fired right up and ran perfect.
I ordered a new rectifier, but I'm a little worried that something else may have caused the original one to burn. I guess it could have been overworked from the previous owner that had some sort of winch on the front. I've just learned from the A/C tech business that changing parts blindly can end up being costly, I always prefer to trouble shoot and diagnose what caused the failure.....especially with a $70 part.
I ohmed out the three yellow wires from the alternator/stator (at the rectifier plug) and they ohmed out fine, also checked them to make sure they hadn't gone to ground. I started it and the output voltage was around 18vac on all three yellow wires at the rectifier plug (between each leg to ground). The only thing that worries me a little is that I've read that the AC voltage from the alternator should be in the 30vac range?
Anyone know what voltage range I should be seeing from the three yellow wires off the alternator windings at the rectifier plug?
Thanks.
*EDIT - I went ahead and plugged the new rectifier in and all is good.
I started searching for a short with my Fluke meter, but when I got back to the rectifier I could smell that it was burned.
Pulled the plug on the rectifier and put another fuse in it, fired right up and ran perfect.
I ordered a new rectifier, but I'm a little worried that something else may have caused the original one to burn. I guess it could have been overworked from the previous owner that had some sort of winch on the front. I've just learned from the A/C tech business that changing parts blindly can end up being costly, I always prefer to trouble shoot and diagnose what caused the failure.....especially with a $70 part.
I ohmed out the three yellow wires from the alternator/stator (at the rectifier plug) and they ohmed out fine, also checked them to make sure they hadn't gone to ground. I started it and the output voltage was around 18vac on all three yellow wires at the rectifier plug (between each leg to ground). The only thing that worries me a little is that I've read that the AC voltage from the alternator should be in the 30vac range?
Anyone know what voltage range I should be seeing from the three yellow wires off the alternator windings at the rectifier plug?
Thanks.
*EDIT - I went ahead and plugged the new rectifier in and all is good.
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Welcome to da forums...:icon_ devil: Glad we could be of some useful assistance....
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TRUST ME!!!! The regulator can blow the fuse!! I spent almost 2 weeks trying to find my prob tearing my wire harness apart and tried everything and found out at the end after frying my computer that it was my regulator!
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