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  1. O

    Lb7 with a lbz fuel pressure regulator

    So much I don’t know where to start ! About killed me but got the truck put back together. .hired three different mechanics to help . All three quit after getting paid the first and only time ! No one wants to work anymore. My original motor had 70%unleaded ran through it . Was detonating bad...
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    Lb7 with a lbz fuel pressure regulator

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    Stalling lb7

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    Stalling lb7

    Thank you ! Ended up being the black with white stripe ground wire on right front of block . Pitman arm was rubbing and pulling on it when I’d make left turns . Then it would kill the motor . Wire was pulled in two inside the insulation.
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    Stalling lb7

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    Stalling lb7

    There are no codes ! That’s the problem! Fixed a ground on the passenger side that looked ok . But upon repair it stopped the stalling.so far so good put 100 miles on it today
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    Stalling lb7

    Unfortunately it did it this morning stalled turning onto road said shift range inhibited. Went 20 miles and it stalled turning left into a school said service brakes soon . Then turned into restaurant left again stalled but no info this time ? Wtf
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    Stalling lb7

    It was the ground off the harness at the drivers body mount . It had separated inside the insulation! There are three wires there . Hasn’t stalled once since I repaired and cleaned it .
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    Stalling lb7

    If it is it has to be wiring the trans is a built suncoast with triple lock converter and billet flywheel. It was built for 1,000 plus Hp . Nothing was changed on it and it wasn’t pulled when the old motor was . It has 30,000 miles on it . And the motor is all new . I’m going to drive it and...
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    Stalling lb7

    One thing that comes to mind is it has a lbz fpr and I had to bend the fuel line a little to clear the lb7 connector. I’ll check it out .
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    Stalling lb7

    Going to chase the wiring today and check all the grounds again .
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    Stalling lb7

    I’m just learning EFI live and have a flash scan v3 . I’m reading up on how to data log now . When I get it figured out I’ll do that and try to catch it stalling .
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    Stalling lb7

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    Stalling lb7

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    Stalling lb7

    No the neutral safety switch on the trans fixed that issue .
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    Stalling lb7

    Yes fuel rail pressure is good I can hook a mechanical gauge on the lift pump . I’m not having any issues with performance after I accelerate runs perfect . Shifts through the gears and hauls ass ! It’s just the log idle stall
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    Stalling lb7

    Not setting a code when it does it . I think I got the p0880 to stop . I’ll run it tomorrow and double check
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    Stalling lb7

    Thank you ! Great reference wish I had the test equipment I need . Still chasing stalling when I put it in gear and go to take off it stalls .
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    Stalling lb7

    Well still can’t find out what’s making the truck stall . It will stall out after putting it in gear and giving it fuel . Stalls but starts right back up . Not getting and codes tonight . But it did say voltage is low . It’s putting 13.6 bolts out at idle . I’m at my whits end here ! New...
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    Stalling lb7

    Thank you for the info . I’m trying to track down a factory electrical service manual
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