Hopefully someone can help me out, or point me in a good direction to look...
I am about done wiring up a 2003 3800 S/C swap into an 86 fiero. I am attempting to control the engine with a 2003 PCM running the S/C OS. The car has a healthy cam in it, 42lb injectors, N* MAF, N* TB. It cranks, all sensors I can think of seem to read correctly in HP Tuners VCM scanner. However, the danged thing wont run for more than a second. I can crank it over and it fires right up, but then dies within 1-2 seconds. Very frustrating!
To trouble shoot this, I've validated that it has spark. I went so far as to keep the engine running with starting fluid for as long as I wanted, which means it must have spark to keep running.
That led me to thinking its fuel related. I've validated that all 6 injectors are wired from their respective cylinder, to the injector wire # on the PCM. So cylinder 1 has injector 1, cylinder 2 has injector 2, etc. I've hooked up a fuel pressure testing gauge and validated that it has healthy fuel pressure before starting, and when it starts. I think it was 60psi or so? So there's fuel pressure, there's spark, and as far as I know the injectors aren't on the wrong cylinders. Everything I can think of suggests that the PCM is cutting fuel on me.
I am aware of VATS, and as far as I know I've disabled it with HP Tuners. To disable VATS I swapped to PWM, and set P1626, P1629, P1630, P1631 to "No Error Reported". I went so far as to load "VATS Status" in VCM Scanner, and it says "PASS".
I'll be damned if it doesn't behave as if VATS is still turned on though. Reminds me exactly of what my LS swapped car did before I learned about VATS and turned it off.
Anyone have any suggestions? Im about out of ideas on whats wrong
I couldnt figure out how to attach a file here, though I did attach the tune file on the HPT board if anyone thinks looking at that would be helpful
http://www.hptuners.com/for...&p=426738#post426738[This message has been edited by crash41301 (edited 04-10-2016).]
