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Discussion Starter #1
Has anyone found an aftermarket tach to fit a 2000 900ie? My stock tach works when it feels like it, and I was quoted a price of over $400 for a new Ducati tach. I know the problem has been discussed before, but I've never seen anyone post if they found a cure or a replacement.
 

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tacho problem

in case the attached link does not work. Quoted from the web article:

Well my tach has be inop for the past 6 months (sometimes it would work if
> I rev it, sometimes it would just be completely dead... and initially it
> would work most of the time).. Lately its been completely dead and coming
> on only sporadically.
>
> I decided to take it apart to investigate and I realized why it stopped
> working and I think this would be failry common to other owners. The tach
> itself is suffering from electrical contact issues inside the tach. The
> tach itself is held inside the housing with 3 brass screws against the
> white plastic housing that forms the base of the tach. The problem is
> this white plastic is thin and VERY fragile over time. Mine got brittle
> and fell apart. Now the tach itself would look and feel just fine
> physically from the outside but if you shake the tach, there might be a
> possibility you may hear something. This is what your hearing.
>
> When this happens the brass screws may come loose. The brass screws /
> nuts threads onto the actual tach unit and forms the electrical contact
> for the tach. Now as long as the brass screws remain tight you may thing
> things are ok right? Well sort of. When the plastic breaks, the only
> thing holding the tach in the housing without bouncing around more is the
> tach external connector (connector with 3 wires to it.) With vibration
> if the tach isn't held down could move back and forth and damage the
> solder joint for this connector on the board itself. You must take the
> tach apart and just heat up the solder joint with a soldering iron to fix
> the joint.
>
>
> Anyway I've down all the above and my tach is working again! and working
> reliabliy for now. The plastic base of the housing is still broken and
> the tach itself is not as secure as it was new but it works so I'm happy.
> I may use some foam to hold the thing down?
>
>
> I hope this helps some who has tach problems. When in doubt shake your
> tach to see if you have loose material inside. thats one way to tell if
> you have this problem or WILL have this problem.
>
 

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Discussion Starter #4
Thanks, I'll give that a try. I know my plastic housing is cracked, so hopefully this will fix it.
Bill
 

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Discussion Starter #6
Seanic,
Your repair worked, no more hoping the tach wakes up, or tapping the side of the case to get it to jump to a reading. I put a glob of silicone at the base of the three brass nuts before I shoved the tach back into its case, and it seems to be holding everything tight. Also used the soldering gun to melt the white plastic case back together, and then smeared a little silicone over those repairs to help keep it together. Thanks for the info.
Bill
 

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intermittent tacho problem

Hi,

Just finished reading this thread and I have a similar problem with my tacho from an 2001 S4. Was wondering how you guys opened the unit up as it looks sealed. How did you get inside the unit without destroying the case? Would really like to know so I don't ruin my unit.

Regards,
 

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I remember I used sharp knief to force it open. Not the best solution, but it did not cost too much damage. Thanks.
 
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