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Thread: 2006 5.7 Vortec PO300 troubleshooting.

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  1. April 23rd, 2024 #1
    nevinsb
    nevinsb is offline
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    Default 2006 5.7 Vortec PO300 troubleshooting.

    I have a 2006 Chevy 3500 van with the Vortec 5700 that died. The place they towed it to replaced coils, plugs, MAF and O2 sensors. Now it starts immediately, has a P0300, and shakes/runs horrible from idle through upper RPM. Coolant and oil levels were normal. In/out of gear made no difference.

    Is someone able to page through this log file to see if there is anything obvious that was missed? It will be quite a road trip for me to go look at.
    Attached Files Attached Files
    2003 Chevy S10 4.3L LU3 LS1B Auto
    48 LB injectors
    Race Proven Motors 2114 intake
    T70 turbo.
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