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Thread: need help with swap 4.3-5.3

  1. #51
    Join Date
    Sep 2005
    Location
    Austin Tx.
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    13,138
    Quote Originally Posted by banker099 View Post
    ok..got it fired up...nelson tune did the trick...for some reason the transmission is in safe mode or whatever...it only gets 2nd and 3rd...it was fine before the swap...and it has a miss...and the check engine light is on....but...i did get to drive it today!!!
    how long did you drive it for? I got some wierd stuff the first few times I fired it up and had it running. Let everything re-learn, fixed my sweet pushrod problem, and it still ran kinda bad, then one day it like did a small "choke" where it like backfired or something.. then it started running perfect.
    1951 3100
    1984 C10

  2. #52
    Join Date
    Jun 2007
    Location
    maine
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    1,458
    Quote Originally Posted by duckysbht View Post
    how long did you drive it for? I got some wierd stuff the first few times I fired it up and had it running. Let everything re-learn, fixed my sweet pushrod problem, and it still ran kinda bad, then one day it like did a small "choke" where it like backfired or something.. then it started running perfect.
    lol.... odd. then the beatings began
    09 CREWCAB LTZ SILVERADO, 6.2, SIX SPEED, CAI,

  3. #53
    Join Date
    Dec 2007
    Location
    wichita falls, tx
    Posts
    3,067
    i drove it for about 10 mins....i checked the engine light codes and this is what i got....
    p0200...injector

    p0740...TCC Solenoid open

    P0785...Shift/timing SOL Malf

    P1810...MFR Controlled Trans


    however the gas gauge started working..haha
    ↓↓↓click pic to go to garage↓↓↓

    408, WCCHL92s, nelson tune,4L80e 3600 Circle D,
    Intro Radicalli's

  4. #54
    Join Date
    Dec 2007
    Location
    wichita falls, tx
    Posts
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    ok got the injector problem fixed....now if i could get the trans working right it would be considered a successful swap..in my book anyways.

    my trans shifts from 1st to third when i first take off....after that it stays in third....if shifted manually it will go in second but will not go into first or OD no matter what...the codes i pulled are listed in the post above, they are the three bottom codes listed above....anybody have any idea???

    it worked perfect before the swap
    ↓↓↓click pic to go to garage↓↓↓

    408, WCCHL92s, nelson tune,4L80e 3600 Circle D,
    Intro Radicalli's

  5. #55
    Join Date
    Sep 2005
    Location
    Austin Tx.
    Posts
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    you plug everything in right?
    1951 3100
    1984 C10

  6. #56
    Join Date
    Dec 2007
    Location
    wichita falls, tx
    Posts
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    i think so...ive got under it 3 times and checked and everything looks right
    ↓↓↓click pic to go to garage↓↓↓

    408, WCCHL92s, nelson tune,4L80e 3600 Circle D,
    Intro Radicalli's

  7. #57
    Join Date
    Sep 2005
    Location
    Austin Tx.
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    13,138
    hmmmmmmmmm maybe something in the tune? you got your tune from NP right? call them up and ask up there see what they say
    1951 3100
    1984 C10

  8. #58
    Join Date
    Dec 2007
    Location
    wichita falls, tx
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    yeah i called him and hes looking at it he is suppossed to let me know something today
    ↓↓↓click pic to go to garage↓↓↓

    408, WCCHL92s, nelson tune,4L80e 3600 Circle D,
    Intro Radicalli's

  9. #59
    Join Date
    Dec 2007
    Location
    wichita falls, tx
    Posts
    3,067
    ok...just left the transmission shop and they said it was the main hot wire to the trans, he said it wasnt getting power, so i guess ill go hook a wire up to it and see if that works
    ↓↓↓click pic to go to garage↓↓↓

    408, WCCHL92s, nelson tune,4L80e 3600 Circle D,
    Intro Radicalli's

  10. #60
    Join Date
    Dec 2007
    Location
    wichita falls, tx
    Posts
    3,067
    checked the hot wire and it was good....any ideas?....ground maybe is the trans grounded separately, should i add a ground to the front of the trans/ back of engine or should i put it somewhere else.....i dont know what to do next.
    ↓↓↓click pic to go to garage↓↓↓

    408, WCCHL92s, nelson tune,4L80e 3600 Circle D,
    Intro Radicalli's

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