I swaped the entire drivetrain from my 92 RS into my 87 camaro that came with a LG4 originally. I used the engine harness and computer from the 92 and the dash harness from the 87. I have spark, and fuel is flowing, but it is going straight through the throttle body and back to the tank. My injectors aren't firing at all. So I think my problem my have to do with the fact that my RS had that VATS system? What can I do to fix that problem, or do yu think it could be something else? I can't remove the dash harness, VATS module or column from the RS, I need that for my other setup.

 

A lot of people around here can disable the vats system for you. Just gotta find someone to do it for you.

 

I have a friend who is going to help me out with a chip that will eliminate the VATS feature, but that only solves half my problem.

My problem now is that the injectors each have there own fuse and because I am using a 87 dash harness from a car that had a carb. setup, there are no fuses in that block for my injectors. I need to know how the injector circuit works, can somebody shed some light on that for me? Anybody know how I should wire this up?

Thanks

 

From what I understand so far (I'm still learning), 12V is applied to one side of the injector coils when the ignition is in run and start. The ECM then sinks to ground the other side of the injector coils in a timing pulse pattern, depending on ECM sensed fuel requirements. I'm adding TBI to a '77 motor in my old Blazer, and I plan on running a fused 12V run signal from the fusebox, directly to one side of the injectors. HTH