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The TTR250 FAQ web pages -> TTR250 -> Repairs and maintenance -> random fuse blowing
Post Info TOPIC: random fuse blowing
tossworm


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random fuse blowing
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Any ideas welcome,

my 1993 ttr blows the fuse with no real reason started mid enduro and everything has been checked ie stator, ignition, rectifier, all conections thought i had solved it but after 50 miles started again as soon as you switch ignition on it blows.

after sitting at side of track for half an hour tried yet another fuse and has been fine since.

I have tried moving all the wires when swithed on and turned all curcuits on and of but the sod will not blow.

Have another enduro on sat and sods law will blow fuse at furthest point fron pits.

Any clues please as girlfriend thinks i moved out as i been in the garage so much.

 

Keith.



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domski1


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I have not had anything to do with the wiring/ fuses on my ttr, if you could get hold of a wiring diagram then you can see what is connected to the fuse and try and check each item, possibly corroded or watervin a multi plug? Short to earth on the wiring some where? Intermittent electrical faults can be a pain to fix as you well know!

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tossworm


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the problem is that the old ttr's only have one fuse so i can't even narrow it down to one circuit i have disconnected and reconnected everything.

keith

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domski1


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What about the rear light unit? I can imagine water could build up in there and cause a short circuit? You really need a amp meter to see what the circuit is drawing. Good luck!

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Cubber


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Usual place for wires to fray are between headlight and steering head - where they flex.
Start checking here - really pull and yank to see if the fuse blows or circuits cut out.
Other than that it could be a fusty joint which would require unclipping, cleaning, Vaseline coating and re-connecting.
Perseverence will find it - be patient.
Martyn

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tossworm


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Yippee cured the fuse problem was the rear brakelight switch completed 10hr enduro with only a broken left footpeg after a hard landing from a jump.

keith

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TTRfan


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Glad you got it sorted Keith smile

A 10 hour enduro doesn't sound a lot of fun confuse

What actually broke on your footpeg - the footeg itself or the support bar?

Brian



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tossworm


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The frame peeled away as if someone had attacked it with a giant tin opener lol will get the welder out tomorrow.
the enduro was a great laugh bit tired and sore today though.

keith

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TTRfan


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Bad luck mate cry

It's a warning to other TTR owners to mkae sure they keep the frame drain holes clear. Some get covered and blocked by bashplates etc.

Brian



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tossworm


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footpeg welded back on now, will post some pics of enduro when available.

keith.

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gooddelph


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I had similar probs.All i did was take the headlight assembly to bits and re-assembled never had the fuse blow since.



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