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Thread: 1990 pontiac sunbird garbage data

  1. #1
    Electronic Ignition!
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    1990 pontiac sunbird garbage data

    I have a 1990 pontiac sunbird with the 2.2 liter engine. I used both $70.ads and $135.ads, converted them both to adx and attempted to use tunerpro. All I got was garbage data jumping wildly all over the place. I tried with and without the 10k resistor and no luck. My setup works fine with my 1994 s10. I am using a usb to ALDL from my laptop. I attempted to contact Robert Saar but he has not answered my emails. Can anybody point me in the right direction?

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    Super Moderator Six_Shooter's Avatar
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    2.2? It should have a 2.0L. IIRC in 1990 they only had the OHC version.

    What's the ECM service number and the BCC?
    The man who says something is impossible, is usually interrupted by the man doing it.

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    I've still got your 5 emails sitting in my inbox, but I've been about 2 months behind at work for about the past 3 months... I haven't been able to undertake anything that requires more than 5 minutes of attention for that time.
    1995 Chevrolet Monte Carlo LS 3100 + 4T60E


  4. #4
    Electronic Ignition!
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    I am sure what those terms mean?

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    Ok, i thought maybe you had passed

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    what do those terms mean ?

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    ECM = The engine computer.
    BCC = three or four letter code from the chip in the ecm.
    OHC = OverHead Cam
    IIRC = If I Remember Correctly

  8. #8
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    pontiac sunbird garbage data

    Quote Originally Posted by 1project2many View Post
    ECM = The engine computer.
    BCC = three or four letter code from the chip in the ecm.
    OHC = OverHead Cam
    IIRC = If I Remember Correctly
    Can anyone answer the question I posed about the data coming back being garbage? I am using the definition file that Bob Saar gave me for that car and the data I get jumps around all over the place. Is it the serial interface not syncing up with the ECM correctly? I tried it with the 10K resistor an it made no difference. If none of this works is there a scan tool that would work with this car? I need to troubleshoot it.

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    Yes, we can answer the question. Please provide the BCC and ecm number so we can confirm that you are using the correct files. Pontiac didn't equip their cars with 2.2l engines in the US in 1990 so we want to start from the beginning.

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    [QUOTE=1project2many;55985]Yes, we can answer the question. Please provide the BCC and ecm number so we can confirm that you are using the correct files. Pontiac didn't equip their cars with 2.2l engines in the US in 1990 so we want to start from the beginning.
    The ecm is 1227748. How do I retrieve the bcc number?

  11. #11
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    [QUOTE=otheym;56015]
    Quote Originally Posted by 1project2many View Post
    Yes, we can answer the question. Please provide the BCC and ecm number so we can confirm that you are using the correct files. Pontiac didn't equip their cars with 2.2l engines in the US in 1990 so we want to start from the beginning.
    The ecm is napa part number xtp652. How do I retrieve the bcc number?
    My son reminded me that we changed the ecm 3 years ago. I looked at the old one and it is a 1228321.
    Last edited by otheym; 12-17-2015 at 11:49 PM.

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    1227748 was not used in the Sunbird. It is from 1987 and used with a 2.5 liter engine.

    The 1228321 is from a 90 Sunbird. It is used with 2.0L and 2.2L engines. The BCC is a three or four letter code and may be on a sticker on the ecm.

    There are several different datastreams for 2.0l and 2.2l engines. Is your car TBI?

  13. #13
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    yes, it is tbi non turbo.The original ecm says on it service no. 1228321 atwb. I think that would be the bcc. I can put the original back in if that will help. I put the new one from napa in and swapped proms. The car works ok but has a starting problem when hot which was why I changed ecms. That was before I knew very much. What would you suggest I do now?
    I have looked on the internet for definition files but have not been able to find any.
    Last edited by otheym; 12-19-2015 at 02:39 AM. Reason: new info

  14. #14
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    I have not been able to find any definition files for that car. I just need an ads or adx file as I am not going to do any reprogramming of the chip. Do you have any?

  15. #15
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    If you can provide the Service number and BCC of the ECM and PROM that is in the car we can help you find the correct files, until then we can't.
    The man who says something is impossible, is usually interrupted by the man doing it.

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