Recent content by MrOverCast

  1. M

    O2 sensors don't work after 0411 swap L31 Vortec

    Barely starts when cold. Plugs are wet when checked. As the engine warms up it gets slightly better. When it's fully warmed up I still get no o2 movement. The point of this post is there's absolutely no movement at all. Hot warm cold etc nothing
  2. M

    96 c1500 vortec 5.7 crank no start

    and thats only in the cold? hows the drive ability of the vehicle? in the summer or when its at full operating tempature
  3. M

    96 c1500 vortec 5.7 crank no start

    Might be the intake air temp sensor. how does it run when its fully warmed up?
  4. M

    96 c1500 vortec 5.7 crank no start

    Check your sensors too. If you have a scan tool obdlink or something take a loot at the sensors and see if any are out of wack. Example. -77 or something.
  5. M

    96 c1500 vortec 5.7 crank no start

    Check for spark. If it has no spark usually that means the engine harness isn't getting power or the crank sensor is broke. I've powered up one of these vortec harnesses on a Walmart table and even with every sensor disconnected it still sparks the coil. If it does have spark check your fuel...
  6. M

    O2 sensors don't work after 0411 swap L31 Vortec

    I used tuner pro to change the injector data and remove vats...
  7. M

    O2 sensors don't work after 0411 swap L31 Vortec

    The 0411injector data was set for 3.00 grams/sec for the 24 lb/hr injectors using tuner pro. Injectors are running at 60 psi constantly. And I never tried that. I assume it wouldn't care but I could give it a try.
  8. M

    O2 sensors don't work after 0411 swap L31 Vortec

    What is injector trajectory? The engine is actually a stock 350 pre 89 non vortec. That I put a vortec engine harness on. I just say I got it out of another vehicle because people stop replying when I tell them what I did to the engine. So stock 350 originally carbureted with a vortec harness...
  9. M

    O2 sensors don't work after 0411 swap L31 Vortec

    No EGR or emissions stuff. im using holley EFI single plane intake
  10. M

    O2 sensors don't work after 0411 swap L31 Vortec

    It definitely runs. its just really hard to start when cold. and it runs like crap hahah The truck running at operating temperature
  11. M

    O2 sensors don't work after 0411 swap L31 Vortec

    No. it is not an issue with the powertrain swap, the entire harness was torn apart and checked for wire damage etc, and everything was fine, This person had this issue to but it doesnt solve my problem. I have many questions to this. It it a 0411 issue. its probably the fact the ecu came out...
  12. M

    O2 sensors don't work after 0411 swap L31 Vortec

    Sorry Not trying to be dumb But these are the two im using. (Circled in red.) Like I mentioned before im not using 1, and 2, in the pic. This is the style connector the pre cat o2s use and thats what im currently using. (Not that specific o2 in the pic)
  13. M

    O2 sensors don't work after 0411 swap L31 Vortec

    I only have the pre cat 02s hooked up and I also have a dual exhaust. The tune is a stock 2002 express van. The whole engine and wiring harness was pulled from another vehicle and is now in my squarebody chevy. I bought new rock auto NTK O2s sensors and couldn't get it to work. this is my second...
  14. M

    Intake swap thought

    i have a hard time finding them. I usually find them for like 900$ not saying it a bad intake or anything I was just spitballing ideas for others hahah
  15. M

    O2 sensors don't work after 0411 swap L31 Vortec

    Ill try to check them again. The heater works on the O2 but not the signal
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