Sat Apr 07, 2012 9:36 pm

Member
MP3 500 IE
Joined: 13 Mar 2012
Posts: 8
Location: Sugar Land, Tx.
 
Member
MP3 500 IE
Joined: 13 Mar 2012
Posts: 8
Location: Sugar Land, Tx.
Sat Apr 07, 2012 9:36 pm linkquote
My engine light started coming on and after riding it for about 30 minutes the light would go out. I took it to the dealer to see what the computer said and they told me it was the battery but when I went to get a battery the they said the battery had 13.1 volts. The gentleman said he would love to sell me a battery but I did not need one, so I continued to ride it. This weekend I went for a 2 hour ride, rested and then headed home. About a hour and half into the ride the light came back on, then the headlights started to flash on and off(this was at night). Normal, then dim and then off, this happened for about 3-4 miles before the bike just shut down at the next stop light. No lights or anything electrical, could not even lock the bike up so that it would stand on its own. I had to put it up on the stand to keep it from falling over. After further investigating the battery was to hot to handle and had to let it sit before removing. Let it sit outside the bike for a while to cool down and then put it back but no power, the battery still reads 13.1 volts. Any idea what I should do? If no one has any ideas I'm going to buy a new battery.
Sun Apr 08, 2012 1:04 am

Hooked
Honda CTX700N
Joined: 04 Sep 2008
Posts: 332
Location: New York
 
Hooked
Honda CTX700N
Joined: 04 Sep 2008
Posts: 332
Location: New York
Sun Apr 08, 2012 1:04 am linkquote
Maybe voltage regulator...? Had to change mine out last summer. My symptoms were that my engine light would light up as I throttled up and would go out when releasing the throttle. A little different than what you're experiencing though. Just throwing it out there...
Sun Apr 08, 2012 4:50 am

Member
MP3 500 IE
Joined: 13 Mar 2012
Posts: 8
Location: Sugar Land, Tx.
 
Member
MP3 500 IE
Joined: 13 Mar 2012
Posts: 8
Location: Sugar Land, Tx.
Sun Apr 08, 2012 4:50 am linkquote
You are correct. At idle the light does go out and as I would accelerate the light would come, but after about 30 minutes the light would go out. Is there a way to check the regulator?
Sun Apr 08, 2012 5:08 am

Veni, Vidi, Posti
Neutrino MP3 492.7 AK, 2013 Moto Guzzi Norge
Joined: 29 Mar 2008
Posts: 21915
Location: Harriman, Tennessee, Tn
 
Veni, Vidi, Posti
Neutrino MP3 492.7 AK, 2013 Moto Guzzi Norge
Joined: 29 Mar 2008
Posts: 21915
Location: Harriman, Tennessee, Tn
Sun Apr 08, 2012 5:08 am linkquote
ALBKE01 wrote:
You are correct. At idle the light does go out and as I would accelerate the light would come, but after about 30 minutes the light would go out. Is there a way to check the regulator?
with the scooter running what voltage do you see across the battery terminals?
Did the dealer do a load test on the battery? not just a voltage check.
How old is the battery?
Sun Apr 08, 2012 10:51 am

Member
MP3 500 IE
Joined: 13 Mar 2012
Posts: 8
Location: Sugar Land, Tx.
 
Member
MP3 500 IE
Joined: 13 Mar 2012
Posts: 8
Location: Sugar Land, Tx.
Sun Apr 08, 2012 10:51 am linkquote
I took the battery out and went to the auto parts to have them test the battery under a load but the battery would not give them a reading today. I bought the bike used in December so I did not know how old the battery was and sense it got so hot that acid had come out, I went ahead and bought a new battery to test the regulator.

At 3000 rpm the regulator is putting out 16-17 volts so from the earlier post it sounds like I need to replace it.

Does anyone know where I can purchase one less than the 229.00 at AF1.com?
Sun Apr 08, 2012 11:20 am

Addicted
2009 Piaggio MP3 250
Joined: 19 Aug 2011
Posts: 791
Location: Michigan; USA
 
Addicted
2009 Piaggio MP3 250
Joined: 19 Aug 2011
Posts: 791
Location: Michigan; USA
Sun Apr 08, 2012 11:20 am linkquote
ALBKE01 wrote:
I took the battery out and went to the auto parts to have them test the battery under a load but the battery would not give them a reading today. I bought the bike used in December so I did not know how old the battery was and sense it got so hot that acid had come out, I went ahead and bought a new battery to test the regulator.

At 3000 rpm the regulator is putting out 16-17 volts so from the earlier post it sounds like I need to replace it.

Does anyone know where I can purchase one less than the 229.00 at AF1.com?
Obviously you need to check the model number, but this is the same brand my 2009 MP3 250 came with: http://www.amazon.com/YUASA-YTX14-BS-Maintenance-Free-Battery/dp/B000WJX4BQ/ref=sr_1_7?ie=UTF8&qid=1333912754&sr=8-7
Sun Apr 08, 2012 7:31 pm

Hooked
Lambretta SX, Stella, Honda
Joined: 31 Dec 2007
Posts: 300
Location: USA
 
Hooked
Lambretta SX, Stella, Honda
Joined: 31 Dec 2007
Posts: 300
Location: USA
Sun Apr 08, 2012 7:31 pm linkquote
Check engine light - Answer...Voltage Regulator_Updated
Body work on new Cherry Red 250ie

With the helpful information in these above threads I was able to diagnose/confirm the problem and replace the faulty voltage regulator on my MP3. It was pretty easy with just basic tools. Athens Scooter is your friend on the replacement regulator. You'll want a strong magnetic screwdriver to remove the 3 screws holding on the backrest, drop one inside and no telling where it would go. I must say the level of helpfulness and of those willing to share what they know sure makes it a lot easier to own something a little different like an MP3. Now for my own helpful hint on the MP3 Regulator replacement, the longer wire harness and connector doubles back on itself and is held to the rest of the harness with a wire tie. You'll need a new wire tie unless you can get the old one to release, mine was easier to replace.
Mon Apr 09, 2012 11:41 am

Sponsor
Joined: 16 May 2011
Posts: 412
Location: Austin on IH35
 
Sponsor
Joined: 16 May 2011
Posts: 412
Location: Austin on IH35
Mon Apr 09, 2012 11:41 am linkquote
$78.99, for genuine Yuasa (Japanese), sold here
http://www.af1racing.com/store/Scripts/prodView.asp?idproduct=1461

dont ever use the OEM part # for a battery.....Vespa, Piaggio, Aprilia all use Yuasa brand batteries, and its always cheaper to get from the regular Yuasa supplier than from OEM.
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