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Thread: 1227730 ecm, AZTY chip and a 3.4 Engine

  1. #16
    Fuel Injected!
    Join Date
    Apr 2017
    Age
    45
    Posts
    25
    Today I checked my connections once more, because i get code 42
    First i thought it was because I disconnected the est bypass, to check if the base timing was zero.
    So I disconnect the power some days ago, to reset the ecm
    Yesterday I connected the power again, and it immediately showed the SES light again....
    Again code 42.

    could this code has something to do with the tack?

    grtz, D

  2. #17
    Fuel Injected!
    Join Date
    Apr 2017
    Age
    45
    Posts
    25
    The code 42 is been solved for now, seems like another bin is working....

    Now facing a next problem.....
    Did a little test drive today.
    my speedometer moves, but showed 5 mph at about 50 mph
    In tunerpro, the speeds shows like it should be..
    When I lowered the road speed constant, tunerpro shows 100mph when driving about 2mph, and the car runs to the limiter and stalls.

    So I guess the interpretation of the VSS in the ECM was ok, but the wrong signal was send to the speedometer.
    Anyone knows where to change this?

    Tunerpro also shows a MAP value of 40 at idle... seems a little high

    grtz, D

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