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Thread: crank no start after flash

  1. #1
    Tuner in Training
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    crank no start after flash

    ok so my car is not wanting to start at all right now and i fired it up yesterday.only thing about this time i loaded a base tune to my pcm via hp tuners.i have spark,fuel pressure and according to my log i also have pulse width and timing.car starts on a alternitive fuel source.
    so i think it is some thing in the fueling i.thing is when i turn the key on the pump sounds like the systems over pressurized,but if i jumper wire the relay it sounds normal but still no start.im wondering if some thing is up with my new injectors.could i have burnt the coils up in them on a stock tune? i never have heard of that.any ideas im almost at a loss.i also have reverted back to the old tune and os.no such luck.is it possible i some how fried my pcm?there are no codes.any help would be awsome
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    98 z28
    twin turbo ls6 4l80e

  2. #2
    HP Tuners Support
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    Bill@HPTuners's Avatar
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    Is this the first time you flashed the custom operating system to the pcm?
    It doesn't have to be perfect, it just needs to be done in two weeks...

    A wise man once said "google it"

  3. #3
    Tuner in Training
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    yes it is.i have the feeling i bricked it.but i can still veiw the data stream and do bilateral testing of the systems and also tried a re write of entire after having the battery disconected for 20 min.heres a screen shot of the tune uploading,is it supposed to say anything next to BCC:?
    Last edited by juicedlq4; 03-18-2012 at 11:47 PM. Reason: added info
    98 z28
    twin turbo ls6 4l80e

  4. #4
    HP Tuners Support
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    Did you accidentally do a write calibration only when changing operating systems the first time around?
    It doesn't have to be perfect, it just needs to be done in two weeks...

    A wise man once said "google it"

  5. #5
    Tuner in Training
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    i honestly dont remember,i am about 80% positive i did but there is a chance i didnt.
    i think i know where this is going,right now im going under the assumption that if it is bricked i cannot communicate with the pcm or do bilateral testing or stream data.is this correct
    thanks
    Last edited by juicedlq4; 03-18-2012 at 11:56 PM.
    98 z28
    twin turbo ls6 4l80e

  6. #6
    HP Tuners Support
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    We've never purposely bricked a pcm to see what the exact possibilities are but if you are 80% sure you used write calibration only I'm 80% sure you bricked the pcm.
    It doesn't have to be perfect, it just needs to be done in two weeks...

    A wise man once said "google it"

  7. #7
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    whoops i meant 80% positive i did write entire.but im leaning towards a bricked pcm.guess its time to find a new pcm.
    thanks for your help
    98 z28
    twin turbo ls6 4l80e