Tachometer failure
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Lurker
Piaggion MP3 250
Joined: 08 Jul 2020
Posts: 4
Location: Cheshire, England
Wed Jul 08, 2020 11:33 pm quote
Hi. I have a 2008 MP3 250 which I bought with a known array of faults. I seem to have fixed just about everything, but the tachometer/rev counter isn't working.

Is this a dash-swap job, or could there be another reason for it not working?
Hooked
2015 MP3 500 ie Business
Joined: 29 Oct 2019
Posts: 241
Location: Belgium
Thu Jul 09, 2020 1:50 am quote
Before you condemn the cluster, have you gone through the entire electrical system and verified everything is up to snuff?
Lurker
Piaggion MP3 250
Joined: 08 Jul 2020
Posts: 4
Location: Cheshire, England
Thu Jul 09, 2020 2:46 am quote
That's not really an option for me. What I know about electrics can be written on the side of a 3 amp fuse. I'm looking for Route One - any likely obviously broken wires, connectors, sensors etc that I can go straight to and swap or fix, or any known weak points. Somebody even said the wrong spark plug could be a factor - mine appears to have the wrong spark plug both in terms of OE manufacturer and recommended replacement.
Hooked
2015 MP3 500 ie Business
Joined: 29 Oct 2019
Posts: 241
Location: Belgium
Thu Jul 09, 2020 2:58 pm quote
Throwing parts at the problem is almost always the most expensive way to fix things.

You have better odds at winning the lottery, or putting your life savings on a horse at the track.

If you suspect you have the wrong components, such as the spark plugs, why not start there?
Lurker
Piaggion MP3 250
Joined: 08 Jul 2020
Posts: 4
Location: Cheshire, England
Thu Jul 09, 2020 11:05 pm quote
Correct spark plug was ordered before I posted, and is on its way. But you're making exactly the point I'm making. I'm new to Piaggio, and I'm trying to avoid throwing parts at it, so asking the knowledgeable out there if they know of any likely, typical or regular failures MP3 250s suffer that would cause the tachometer to stop working.

For example, I hit a pothole in the road the other day and the dash lit up with every tilt mechanism light there is. To an MP3 newby that looked like a full front suspension rebuild.

But somebody who knows MP3s said I should just remove and then reinsert the sensor. 30 seconds. Problem solved.

Is there a rev-counter equivalent action?
Hooked
2008 fuoco
Joined: 19 Jul 2015
Posts: 305
Location: United Kingdom.
Fri Jul 10, 2020 12:06 am quote
ie305 wrote:
For example, I hit a pothole in the road the other day and the dash lit up with every tilt mechanism light there is.
In view of that statement it would say to me a bad electrical connection.
Lurker
Piaggion MP3 250
Joined: 08 Jul 2020
Posts: 4
Location: Cheshire, England
Fri Jul 10, 2020 1:02 am quote
Rev counter failure pre-dates pothole hit.
Hooked
2009 MP3 400
Joined: 11 Jun 2007
Posts: 212
Location: Sayre, PA
Fri Jul 10, 2020 2:45 am quote
The service manual is floating around here somewhere and available for download.

I'd be looking in there for electrical info.
Hooked
2015 MP3 500 ie Business
Joined: 29 Oct 2019
Posts: 241
Location: Belgium
Fri Jul 10, 2020 3:01 am quote
Considering the OP is not electrically skilled the only suggestion I can make is to take the bike to a Piaggio MP3 dealer or indie that is very familiar with the MP3 a.k.a. MP3 specialist.

On my MP3, the weatherproof boot on the back of the cluster was so poorly installed at the factory the electrical wiring was completely exposed. Luckily I found this problem when the bike was still brand new. Might be worth a peek and a poke on your bike.
Hooked
2008 fuoco
Joined: 19 Jul 2015
Posts: 305
Location: United Kingdom.
Fri Jul 10, 2020 5:03 am quote
ie305 wrote:
Rev counter failure pre-dates pothole hit.
and when you hit the pothole everything lit up on your dash, so that says to me a electrical problem and what is the tacho powered with !. You don't need to know much about electrics to check that every electrical connection is connected and clean.
Veni, Vidi, Posti
GTS 300ABS, Buddy 125, Buddy Kick 125
Joined: 29 Dec 2007
Posts: 11358
Location: Oregon City, OR
Fri Jul 10, 2020 9:54 am quote
pmatulew wrote:
The service manual is floating around here somewhere and available for download.
"Somewhere"? We can do better than that. It is in the Wiki.

https://manuals.wotmeworry.org.uk/Piaggio/Piaggio%20MP3/MP3%20250/
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