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Thread: NEED Help E67 standalone for sandrail ALPHA Fab system DBW problem

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    Default NEED Help E67 standalone for sandrail ALPHA Fab system DBW problem

    NEED Help E67 standalone for sandrail ALPHA Fab system DBW problem

    Bought Alpha Fab harness and computer for 2008 cobalt 2.2 motor with coil on plug. Everything starts and runs fine until you get on the throttle too fast (I think) it will start to accelerate then loses power and returns to idle. If you baby the throttle by pressing slowly it will accelerate fine, but it doesn't take much for it cut out. Throws P0606 code and if you shut off disconnect battery for a few seconds it will start and run fine again but does same thing.

    Back story - contacted Alpha Fab 4 months ago about issue, was told to buy gas pedal matching VIN in ECM (E67) but didn't help. Was also told new ecm was being shipped 10/17, wouldn't respond to emails etc. finally gave tracking # on 11/2 but shows never shipped. Point is I can't get these guys to fix this and i'm stuck

    I don't have any tuning knowledge or hardware, so any help or idea of who could help would be appreciated. I'm in Phoenix, AZ area.

  2. #2
    Joe (Moderator) joecar's Avatar
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    Besides other things, make sure the diagnostic MAP/ETC tables have sane boundaries.

    Does this happen regardless of RPM...?

    Can you post your tune file...?

  3. #3
    Joe (Moderator) joecar's Avatar
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    I moved this thread to the E37/E38/E67 forum.


    Quote Originally Posted by flinttownchopper
    2008 cobalt 2.2
    Are you sure you got an E67...?

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    I posted in both places since it is also a speed density tune I have.

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    Joe (Moderator) joecar's Avatar
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    Quote Originally Posted by flinttownchopper View Post
    I posted in both places since it is also a speed density tune I have.
    It's not a custom operating system.

    Speed Density = MAF failed/deleted.

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    Joe (Moderator) joecar's Avatar
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    Are you seeing a MAF DTC...? (you should be)


    Post your tune file.

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    Quote Originally Posted by joecar View Post
    Besides other things, make sure the diagnostic MAP/ETC tables have sane boundaries.

    Does this happen regardless of RPM...?

    Can you post your tune file...?
    Although I couldn't prove it I think it's related to the speed at which the pedal is pressed, and not necessarily same RPM every time. But it's so finicky I haven't been able to drive enough to pinpoint the symptoms. I don't have any tuning knowledge to know where to begin with posting the file. I don't have any tuning software either, just figured you guys that do might have some insight

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    Quote Originally Posted by joecar View Post
    It's not a custom operating system.

    Speed Density = MAF failed/deleted.
    Understood

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    Quote Originally Posted by joecar View Post
    I moved this thread to the E37/E38/E67 forum.



    Are you sure you got an E67...?
    I would say 99% sure. Monday I will double check the casting #'s but it's the three plug model looks like what i'm seeing when I google it

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    Quote Originally Posted by flinttownchopper View Post
    I would say 99% sure. Monday I will double check the casting #'s but it's the three plug model looks like what i'm seeing when I google it
    Found old email from Alpha Fab saying this is an E67

    Codes I got
    P0102
    P0650
    P0606

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