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Thread: Flashing EFI, but no code

  1. #1
    apriliaforum expert Fox Fader's Avatar
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    Flashing EFI, but no code

    My EFI light flashes sometimes while I ride. It was flashing when I started the bike last night (cold engine) and I quickly turned it off and the fan had came on and turned off with the engine. It flashed today as I was riding so I took it up to a high rpm and it sputtered a bit but when it goes out it pulls hard and smooth.
    I checked for codes but since the EFI light is not on there's no code. HELP
    2007 Tuono 1000R Factory - 21K miles
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  2. #2
    apriliaforum prov-nov
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    EFI Flashing

    My bike did this on and off for a couple of years and I think I have just recently fixed the problem and no one ever mentioned it before on this site so here goes. I had the EFI problem and when my light flashed my bike ran like crap, was had to start, smoked, missed and ran like it was on one cylinder. I checked for broken wires, which everyone said was the problem. It wasn't. I got out one fall Saturday to ride and my relatively new battery had gone dead, (on a battery tender.) I pushed the bike off and it started. Got 1 mile from the house and bam! EFI light flashing, running like crap, won't idle and finally dies. 1 + 1 = 2 I realize my problem has been ( I believe) low voltage due to a faulty voltage regulator design (which you can read about for days on this site). I bought the aftermarket voltage regulator from bikepainter and replaced my battery and I seem to have (fingers crossed) solved my long frustrating problem. No one ever mentioned it on this site that I could find but I believe that the EFI system on these bikes is very sensitive to low voltage and causes the engine to go into "safe mode" when voltage drops , and due to an improperly designed voltage regulator, they probably almost always will. Just my opinion but get the aftermarket regulator and charge or replace the battery and I'll bet your problem will be solved.

  3. #3
    apriliaforum expert Fox Fader's Avatar
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    I appreciate the reply Cap, but I never have any starting issues even if the bike sits for 2 weeks.

    Think I'll dive in and start checking wires.
    2007 Tuono 1000R Factory - 21K miles
    Cored OE Racing CansMap2Pazzo Shorty Knock-offs15-40AF1 Link PlatesAprilia Sliders
    Laminar WindscreenLowered PegsLED City and Tag Lights
    ProTaper Universal LowClear Signal Lenses

    2017 Z125 PRO in Candy Lime Green
    Many mods

    2001 Futura in Silver - Sold, after 8.5 years of service.

    Retired - DJ, Turntablist, MC, Creator, Video Editor and Mixologist.
    Cored OE Cans vs Leo Vince Titanium Vid
    Slammin' Tunes!

    HF152, 10-26954
    HF564 .024-.028


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  4. #4
    apriliaforum prov-nov
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    EFI Problem

    I didn't either. When these bikes run at higher RPM the voltage regulator LOWERS the voltage and I believe on my bike and probably lots of others the battery gets just low enough with the combination of low charging volts that the engine EFI unit clicks into "safe mode " causing the problems that I had and that you describe. The morning the battery got so low the engine wouldn't start just confirmed that that was the problem for me. In other words, you can still have enough voltage in the battery to start the bike but have the problem as described. Mine always happend at higher RPM which made me think it was a loose wire/vibration problem but that is also when the voltage drops. Read all the posts about the wire modification. This is what they are talking about. No one ever really made the connection with this type problem and the charging system,(which surprises me) but I'll bet anything they are related......

  5. #5
    apriliaforum expert RobC's Avatar
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    when my regulator died completely, the efi light only started flashing a few minutes before the bike died terminaly. Even with a jump start the bike would only run for a few seconds once the jumpers were disconnected, so I'd say the battery voltage has to be way below 12v to cause the efi to flash.
    ~More likely you've got an intermittent short somewhere.

  6. #6
    apriliaforum expert Fox Fader's Avatar
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    Cap, that still dosen't explain why it flashed at idle the other night.
    2007 Tuono 1000R Factory - 21K miles
    Cored OE Racing CansMap2Pazzo Shorty Knock-offs15-40AF1 Link PlatesAprilia Sliders
    Laminar WindscreenLowered PegsLED City and Tag Lights
    ProTaper Universal LowClear Signal Lenses

    2017 Z125 PRO in Candy Lime Green
    Many mods

    2001 Futura in Silver - Sold, after 8.5 years of service.

    Retired - DJ, Turntablist, MC, Creator, Video Editor and Mixologist.
    Cored OE Cans vs Leo Vince Titanium Vid
    Slammin' Tunes!

    HF152, 10-26954
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  7. #7
    apriliaforum prov-nov
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    Efi Blues

    You may be correct. I'm just sharing my similar on going problem with you and how I seem to have finally corrected it. Look for a shorted wire under the tank or left side of the frame.
    Last edited by captainflugel; 11-13-2006 at 11:07 PM.

  8. #8
    apriliaforum expert Fox Fader's Avatar
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    Quote Originally Posted by captainflugel
    You may be correct. I'm just sharing my similar on going problem with you and how I seem to have finally correctd it. Look for a frayed wire under the tank or left side of the frame.
    I'm on it... thanks
    2007 Tuono 1000R Factory - 21K miles
    Cored OE Racing CansMap2Pazzo Shorty Knock-offs15-40AF1 Link PlatesAprilia Sliders
    Laminar WindscreenLowered PegsLED City and Tag Lights
    ProTaper Universal LowClear Signal Lenses

    2017 Z125 PRO in Candy Lime Green
    Many mods

    2001 Futura in Silver - Sold, after 8.5 years of service.

    Retired - DJ, Turntablist, MC, Creator, Video Editor and Mixologist.
    Cored OE Cans vs Leo Vince Titanium Vid
    Slammin' Tunes!

    HF152, 10-26954
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  9. #9
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    aftermarket?

    where is a good place to get the aftermarket volt reg?? and do you have a pic of the one you chose??
    thanx a ton

  10. #10
    apriliaforum prov-nov
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    Voltage Regulator

    E Mail member bikpaintr. He sells them. He is very helpful and the aftermarket looks just like stock, bolts right on, plugs right in , costs less than stock and actually works correctly.

  11. #11
    apriliaforum expert Fox Fader's Avatar
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    Finally!

    Finally got a code - 21 - engine temperature malfunction

    Now I need to take my sensor out and test it... funny though, I 'm getting a constant reading on the dash that seems to stay in order, staying ~170 - 172 (<< for now)
    2007 Tuono 1000R Factory - 21K miles
    Cored OE Racing CansMap2Pazzo Shorty Knock-offs15-40AF1 Link PlatesAprilia Sliders
    Laminar WindscreenLowered PegsLED City and Tag Lights
    ProTaper Universal LowClear Signal Lenses

    2017 Z125 PRO in Candy Lime Green
    Many mods

    2001 Futura in Silver - Sold, after 8.5 years of service.

    Retired - DJ, Turntablist, MC, Creator, Video Editor and Mixologist.
    Cored OE Cans vs Leo Vince Titanium Vid
    Slammin' Tunes!

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  12. #12
    apriliaforum Junkie Voyagerxii's Avatar
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    The workshop manual shows two coolant temp sensors. I'm pretty sure only one of them is used for the gauge.

    Scott

  13. #13
    apriliaforum expert Fox Fader's Avatar
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    Quote Originally Posted by Voyagerxii
    The workshop manual shows two coolant temp sensors. I'm pretty sure only one of them is used for the gauge.

    Scott
    That's good news!
    2007 Tuono 1000R Factory - 21K miles
    Cored OE Racing CansMap2Pazzo Shorty Knock-offs15-40AF1 Link PlatesAprilia Sliders
    Laminar WindscreenLowered PegsLED City and Tag Lights
    ProTaper Universal LowClear Signal Lenses

    2017 Z125 PRO in Candy Lime Green
    Many mods

    2001 Futura in Silver - Sold, after 8.5 years of service.

    Retired - DJ, Turntablist, MC, Creator, Video Editor and Mixologist.
    Cored OE Cans vs Leo Vince Titanium Vid
    Slammin' Tunes!

    HF152, 10-26954
    HF564 .024-.028


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  14. #14
    apriliaforum expert Befbever's Avatar
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    Quote Originally Posted by Fox Fader
    That's good news!
    No it's not. it means that your ECU - which is getting the data from the other temp sensor, not the dash one - is getting wrong data. Usually resulting in a very rich-running bike. Better get a new one asap.

    Edit: it's all in this thread.
    And no, the Mille doesn't have the same sensor.
    Last edited by Befbever; 11-19-2006 at 04:43 PM.
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  15. #15
    apriliaforum expert Fox Fader's Avatar
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    Upon further review there is one thermistor for each cylinder, from looking at the schematic it dosen't show that one sends a signal to the dash and one to the ECU, but some pics it shows that both send a signal to the ECU one shows it dosen't...

    What I gather... Both sensors send to the ECU and it (ECU) uses one signal for fuel mapping and one for the temp gauge.

    But I'm going to go with the simple fix and try to find out if the rear one does in fact send the signal to the ECU for mapping (checking wiring first then the sensor), if it dose then it is good news.

    Also, where can I get a temp sensor if I need one?
    Last edited by Fox Fader; 11-19-2006 at 08:14 PM.
    2007 Tuono 1000R Factory - 21K miles
    Cored OE Racing CansMap2Pazzo Shorty Knock-offs15-40AF1 Link PlatesAprilia Sliders
    Laminar WindscreenLowered PegsLED City and Tag Lights
    ProTaper Universal LowClear Signal Lenses

    2017 Z125 PRO in Candy Lime Green
    Many mods

    2001 Futura in Silver - Sold, after 8.5 years of service.

    Retired - DJ, Turntablist, MC, Creator, Video Editor and Mixologist.
    Cored OE Cans vs Leo Vince Titanium Vid
    Slammin' Tunes!

    HF152, 10-26954
    HF564 .024-.028


    Chrome extension to see photobucket blocked pics.

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