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Thread: 3800 na no start

  1. #1
    Tuner in Training
    Join Date
    Jul 2014
    Posts
    10

    Question 3800 na no start

    07 3800 na with a 06 Grand prix wiring harness in a 86 Fiero. I have turned off the VATS with HP tuner. The engine won't run, we get one pulse of the injectors then nothing. The engine will run with starter fluid sprayed into the intake. I have gone through the harness numerous times and can find no problems. We have changed the ECM, Ignition module and the crank position sensor with no change.
    I am at a loss as to were to go from here.
    Any ideas would be greatly appreciated

    Joe Sokol (Fieroking)

  2. #2
    Potential Tuner
    Join Date
    Jul 2019
    Posts
    4
    Which ecm are you currently using, the P04 controller. If so the HP tuners may not properly disable the VATs fuel disable. I ran into this issue as well. I ended up paying someone to properly disable the VATS to allow the injectors to fire.