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Thread: Possibly a bad SMEC?

  1. #1
    boostaholic
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    Possibly a bad SMEC?

    Ok, so I've been having this fuel cut issue mentioned here:
    http://www.turbo-mopar.com/forums/sh...-to-solving-it...

    I reset the battery and put in a new power board thinking maybe I had a leaky cap or bad resistor....the car pulled nice and hard all the way to redline before the adaptives had a chance to adapt. One the computer "learned", the fuel cut came back...still 4 grand. Does this sound like a bad logic board? Perhaps there's a sensor mucking up somewhere? Different chips in the same SMEC had no effect, although the problem seems intermittent. I can go a week without fuel cut and then it comes back.

    I've pretty much ruled out anything mechanical since the problem disappears when the battery is disconnected.

  2. #2
    turbo addict
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    Re: Possibly a bad SMEC?

    reset the battery again and see what it does.
    Ian Adams Function>Form 1990 shadow scrapped, too rusty:( 1991 Spirit R/T Scrapped, parts sold:( 1989 Turbo Caravan Daily beater with built-[I]ish [/I]​engine slowly evolving into weekend turbo beater.

  3. #3
    boostaholic
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    Re: Possibly a bad SMEC?

    Quote Originally Posted by shackwrrr View Post
    reset the battery again and see what it does.

    I did...no cutout again until computer learns.

  4. #4
    boostaholic
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    Re: Possibly a bad SMEC?

    I don't know how or why I posted in this forum...mods, could you move it to the main "Electrical and Fuel System" forum?

  5. #5
    Visit www.boostbutton.com... Turbo Mopar Contributor ShelGame's Avatar
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    Is this the cal I did for you? I can check and see if it's in the cal. It sounds like it is...
    https://db.tt/SV7ONZpQ
    Rob Lloyd
    '89 Daytona C/S

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  6. #6
    turbo addict
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    Re: Possibly a bad SMEC?

    No its one I did with the V17. I run the same tune just scaled to my 40s instead of his 20s and have no issue.

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