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Thread: No start after tune load

  1. #1
    Tuner in Training wesp89's Avatar
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    No start after tune load

    I returned my car back to stock with my sct live wire ts today and loaded a new tune through hp tuners after loading the tune I fired the car up and let it idle all the way up to running temp while data logging it everything seemed fine so I cut the car off and went in the house for about 30 mins and decided I would take the car for a drive went out got in the car and turned the ignition and nothing happened car didnt even turn over so i went back in the house and grabbed the laptop to review the tune when I got back in the car I decided to give it one more try before connecting the lap top and the car started normal so I cut the car off and started it back no problem took the car out for a spin came back home and parked it for about a hour tried to start it again and it wouldnt do anything and from there I loaded a tune back in the car with sct live wire and the car has been cranking fine so with that being said what am I doing wrong I made sure the battery in the car has a good charge no problems there and ever time I plug the laptop to the car its plugged in to household power with drop cord

  2. #2
    Tuner in Training wesp89's Avatar
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    would this problem come from me reading in the tune that was in the car (probably a SCT tune) modifying it and flashing it back in?

  3. #3
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    no what u describe needs more investigating

    cant fix the problem until u identify the cause

  4. #4
    Tuner in Training wesp89's Avatar
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    So where should I be looking

  5. #5
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    Why don't you check the OS ID of what you think is the 'stock' tune to be sure it's stock. While you're at it see if you can find one in the repository and do a compare. Make sure something isn't off or weird.
    Knock Retard is the reduction or prevention of knock by lowering ignition timing:

    (+) Adding Knock Retard = Reducing Timing. PCM is seeing knock.
    (--) Lowering Knock Retard = Increasing Timing. PCM isn't seeing knock.
    __________________________________________________ ________

    2014 Mustang GT Premium. VMP Gen2R Supercharged with an FTI 3000rpm Converter. JLT, BMR, Steeda, Viking, etc.
    Don't fix it if it ain't broken | Maximum effort gets maximum results

  6. #6
    Tuner in Training wesp89's Avatar
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    When I load my stock tune into hp tuners the os is blank

  7. #7
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    any dtc's? Doesn't sound like a tune issue to me, rather an ecm or wiring issue of some sort if it starts sometimes but not others.
    It doesn't have to be perfect, it just needs to be done in two weeks...

    A wise man once said "google it"

  8. #8
    Tuner in Training wesp89's Avatar
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    After I loaded my old tune back into the car with my sct live wire all the issues went away so if it was wiring / ecm wouldn?t the problem still hang around no matter the tune? I?m going to load the tune into the car again with hpt this afternoon to see if it happens again

  9. #9
    Tuner in Training wesp89's Avatar
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    No on the dtc?s also

  10. #10
    Tuner in Training wesp89's Avatar
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    And I forgot to mention the car has been driven few thousand miles sense the work has been done and tuned just bought hp tuners to adjust some issues like leaning out on idle , and hanging rpm in between shifts

  11. #11
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    Quote Originally Posted by wesp89 View Post
    When I load my stock tune into hp tuners the os is blank
    Are you looking in the right place? CTRL+D , Controllers Tab?

    That's very suspect to me that OSID is blank but what do I know... Maybe that 'stock' tune isn't really stock. It could even be the SCT boxed tune. Did you compare like I mentioned?
    Knock Retard is the reduction or prevention of knock by lowering ignition timing:

    (+) Adding Knock Retard = Reducing Timing. PCM is seeing knock.
    (--) Lowering Knock Retard = Increasing Timing. PCM isn't seeing knock.
    __________________________________________________ ________

    2014 Mustang GT Premium. VMP Gen2R Supercharged with an FTI 3000rpm Converter. JLT, BMR, Steeda, Viking, etc.
    Don't fix it if it ain't broken | Maximum effort gets maximum results

  12. #12
    Tuner in Training wesp89's Avatar
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    ok I was just looking under the os tab by "engine" im brand new to this so bare with me I did CTRL+D and the info on both tunes (stock/and the one I pulled) have the same info

  13. #13
    Tuner in Training wesp89's Avatar
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    Loaded the tune back in the car today with hp tuners and all is well so far starts every time

  14. #14
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    Quote Originally Posted by wesp89 View Post
    Loaded the tune back in the car today with hp tuners and all is well so far starts every time
    Which is why I suspect a wiring or internal ecm issue of some sort.
    It doesn't have to be perfect, it just needs to be done in two weeks...

    A wise man once said "google it"

  15. #15
    Tuner in Training wesp89's Avatar
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    If I remember correctly I don?t think I turned the key off after loading the tune the first time I just started the car after the write more then likely it was a error I made it it does it in the future I?ll repost

  16. #16
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    if the car is up to 10 years old. then unplug pats.