2007 TRX450ER Blowing Main Fuses

[Stoopidbot1]

So I will describe my last 2 rides so you know what the conditions were. The first was my last race, very wet and muddy, no crashes. She ran like a raped ape, no problems at all. The next ride was some trail riding that was wet and very rocky. I bounced off of a rock pretty good on my belly skid plate. I stopped to check for damage, none, then I turn my key back to start and I lose all electrical.

I was able to pop start it and get it back to the truck. I find later that the main fuse is blown, replace it. The quad starts up just fine everything is gravy. Several hours later I turn the key on again and blow the fuse instantly. There was no riding or bouncing between the 2 starts.

:aargh:WHY?

[Stoopidbot1]

My baby has been in the shop for a week and they can't find ANYTHING that would cause it.

[Ajmboy]

If it's in the shop...they should be able to find it. It might be your starter causing a huge load when you turn the key to start it. Disconnect the cable/connectors from the starter and turn that key on..see if the fuse blows. if it doesn't blow, your starter is the issue.

[DirtDemon]

The only thing that makes sense to me is a dead short. I would check ALL your wiring very carefully.

[Stoopidbot1]

I personally couldn't find anything wrong with the wiring. My mechanic has gone through it all, he is at the point that he is contacting Honda for a complete wiring schematic. I have a race in 2 weeks...I need my baby.

[DirtDemon]

That is really wierd, good luck to you, I hope you get it figured out in time. Perhaps you might try replacing the starter solenoid. The short could be inside there.

[Stoopidbot1]

It has been at the shop for 2 weeks. They haven't found anything yet.

[Sc0tt]

Bot that sux. It does sound like a wire got pinched when you hit the rock but if you and the mechanic can't find anything I don't know. I hope you have some luck finding it soon.

[Stoopidbot1]

I mean after 2.5 years of HARD riding blowing the fuse is my only problem I have ever had, I'll take it.

[outlander560]

i have actually ran into the same problem on one of my vehicles..turns out their was a short in the ignition wiring..also tell him to check the fuse housing we had to replace are's as well fixed the problem haven't ran into it since

[Stoopidbot1]

Thank you, I will.

[Stoopidbot1]

I found the problem, after 2 weeks in the shop, they found nothing. I went and got it from them and took it to my racing buddy. In 15 minutes he determined that I need a new start button. The spring has collapsed causing the contacts in there to short out.

[Sc0tt]

Great Bot! Glad you found the problem How weird.

[DirtDemon]

That is good to hear, do you feel complete again?

[Stoopidbot1]

Not quite. I have to get the part and install it. Of course I can't buy just the button piece, I have to buy the whole switch assembly.

[s3r4phic]

Not quite. I have to get the part and install it. Of course I can't buy just the button piece, I have to buy the whole switch assembly.

figures although glad you found the fix man nobody wants to be without their ride!

[Stoopidbot1]

I was getting nervous. I have a race next Saturday.

[DirtDemon]

Well, how are things?

[Stoopidbot1]

My racing buddy set up a toggle switch out of a police car on my handle bars and wired it to my starter. It works just as good if not better than stock. But it is just a temporary fix until I get the actual part. This way i can race.

[ATVmechanic]

I found the problem, after 2 weeks in the shop, they found nothing. I went and got it from them and took it to my racing buddy. In 15 minutes he determined that I need a new start button. The spring has collapsed causing the contacts in there to short out.

That's good troubleshooting by your friend!

[Guest Winchester300]

disconnect either side of your battery and put a voltmeter, yes voltmeter in series with the side you disconnected. IF you see a voltage that is not good. Start pulling fuses one at a time until the voltage is no longer present on the voltmeter, once you have identified where you can then narrow it down to what. I really hope this helps you out, I have used it on automobiles several times.

[DrtyGrlKristin]

I thank you for your input, however I found the problem. It was actually my start button for the electric start. The spring collapsed causing a constant contact and then riding in wet conditions blew the fuse from moisture staying in there.

[Stoopidbot1]

Again, i was logged in as my wifey.

[CK1999_400ex]

it could also be the neutral lite sensor ... mine did that after some hard landings .... i replaced it and havent had a problem sence ...

[Stoopidbot1]

it could also be the neutral lite sensor ... mine did that after some hard landings .... i replaced it and havent had a problem sence ...

Thanks but I have been running trouble free since the new switch was installed.