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dash problem

Joined Dec 2008
13 Posts | 0+
hants england
why does my dash display return to zero etc when the battery (new) struggles a bit to turn the engine over
 
Sounds like it could be a serious Voltage drop when you crank the engine. Before taking it to a dealer, I would check the condition of the battery terminals, as well as the starter terminal. It might pay to check the condition of your 'new' battery as well. Also, have you checked the condition of your brown connector(s)?

If you have a brown connector issue, your battery won't be getting charged properly, and will run itself down.:thumbup

Dave
 
thanks lads - when the snow clears and it gets a bit warmer hopefully towards the end of the week I will go through it
 
just a quick update - I have stripped the bike down a bit but have not seen anything bad yet although I have yet to find where the battery is earthed to the frame, any body know this? my money is on the starter relay which I will check soon - it's damn coldout there, that is real snow on the ground

IMG_3795.jpg


relay looks OK

IMG_3799.jpg


I think I might also take the starter motor of and have a look at it

IMG_3798.jpg


has anybody done this? is it as straightforward as it looks?
 
I believe the earth strap is terminated on the engine somewhere. I was checking mine yesterday and, using a meter, found the connection 'seemed' OK but, to be on the safe side, I added an extra strap from the battery to the subframe.

No need to take out anything if you do this.
 
Sounds like it could be a serious Voltage drop when you crank the engine. Before taking it to a dealer, I would check the condition of the battery terminals, as well as the starter terminal. It might pay to check the condition of your 'new' battery as well. Also, have you checked the condition of your brown connector(s)?

If you have a brown connector issue, your battery won't be getting charged properly, and will run itself down.:thumbup

Dave


Whats the 'brown issue' Dave dude...?:dunno
 
just stuck a meter across the starter relay while cranking the engine over - it showed less than 9 volts, battery showed 12.6 volts so I think thats the answer, I will order one soonest
Dave
 
There is a common problem with our beloved Tuonos (both generations). This affects the yellow AC leads between the alternator to the regulator. The problem is associated with the connectors Aprilia have used, and arises in some units which suffer with poor contacts within these brown connectors causing overheating of the insulation, and ultimately, failure of the connector.:kicknuts

A fix for this is detailed here: http://www.joe250.com/motorcycles/tuono/brownconnectors/brownconnectors.html

IMO, it is worthwhile for all of us to regularly check these connectors for visible signs of overheating, thus eliminating the problem before it it becomes a major PITA.:rant


Dave
 
yeah the brown connector melts :thumbdown


IMG_3795.jpg



definitely swop the solenoid for a yammy one, just be careful when starting your bike with the battery low you dont want to damage your sprag :eek
 
Hi Guys, fiitted the new starter relay, problem over, unfortunately I had already ordered an Aprilia one on E bay before reading about the Yamaha one, still at least I will know next time, Now to look at the brown connector issue. Anyway thanks for the help guys.
 
Hi Guys, fiitted the new starter relay, problem over, unfortunately I had already ordered an Aprilia one on E bay before reading about the Yamaha one, still at least I will know next time, Now to look at the brown connector issue. Anyway thanks for the help guys.

You're welcome.:thumbup

That's what we're here for mate.

Dave
 
Hall, I noticed the solenoid terminals were dry, cover them in vasoline stops shorts.
the boot wasn't covering the terminal, mine went a few weeks ago and the guy i use for parts and service told me to make sure it's completely covered, stops moisture getting in.
I think what happened was the earth came lose and on start up, as it was damp, a spark jumped across as it melted the boot to the nut.
 
'Hall, I noticed the solenoid terminals were dry, cover them in vasoline stops shorts.'

will do Trug - Ta
 
Hey, guys. That dash reset is a bit of a pain. I heard at some point that you could just solder a resistor to an existing slot at the back of the dash to keep it from resetting itself every time the battery is taken out. Anybosy know anything about this possible solution?
 
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