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Service warning and triangle - again

Discussion in 'Stelvio Chat & Tech' started by MotoZA, Sep 20, 2018.

  1. john zibell

    john zibell Moderator Staff Member GT Famiglia

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    My answer to both your questions is I don't know.
     
  2. kiwi dave

    kiwi dave GT Reference

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    You asking for more possible trouble substituting one model for another. They don't get different numbers from the manufacturer for no reason.
     
  3. MotoZA

    MotoZA Just got it firing!

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    Finally got the bike running again. I *think* it was the ECU ground, even though it was secure. I loosened it, cleaned the surfaces, sprayed some terminal cleaner, and tightened. Also checked the resistance of the rpm sensor again, it measured 660 ohm. Cleaned its connectors too, and every other plug I could get my hands on. Even polished the battery lead connectors, wasn't going to leave anything to chance. Assembled, switched on, noticed the service warning was gone, pushed the start button, immediately started. Now not sure what the solution was, but very relieved.
     
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  4. MotoZA

    MotoZA Just got it firing!

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    Oh boy, the bike is starting to act up again with ECU error 54. So, I have decided I'm going to buy a new phase/rpm sensor because I've convinced myself (perhaps incorrectly) that it is the phase sensor that's busy failing. Reason? Sometimes the RPM dash needle drops to zero, it's hardly noticeable, but it coincides with a misfire. Also, if you read up on phase sensor failures, you can get a slew of different issues, many of which I experience.

    After spending hours on the web (mostly reading Aprilia/Guzzi/Ducati/Fiat/Alfa forums and bugging sellers on eBay) I have discovered that the Magneti Marelli SEN 813 is in fact a SEN 8i3, not 813 (a capital 'i', not a number one). I took mine out again and it's definitely a capital 'i'. Magneti Mareli makes a range of these sensors, most of them are designated as SEN 8#*, where the # could be D, E, K, M or I. The * is either omitted or a 3 (if omitted, it's a 2-pin, if a 3, well then it's a 3-pin).

    So after learning all that, I eventually found a replacement sensor made by Facet, part no. 9.0032. I'm going to order one and try it. I'll report back in due course.
     
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  5. MotoZA

    MotoZA Just got it firing!

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    Unboxed.jpg
    So I replaced the Magneti Marelli Crank Position Sensor with the Facet one, it's been 6 weeks now and no more ECU errors, no more starting issues either. Bike runs and starts beautifully. Below some pics of the two sensors, I think the culprit is the very sharp bend in the old sensor's wiring, I made sure to have a larger radius when I installed the Facet sensor. Success.

    EDIT: To confirm, you can replace the Magneti Mareli SEN 8I3 sensor with a Facet 9.0032.
     

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    Last edited: Dec 5, 2018 at 2:29 AM
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