Only one side of my TBI injectors is firing. It's not the injector, when I swap the wires from side to side, the other side will work. To be a little clearer, the two injectors are each fired by a pair of wires, On one side red and green, the red and blue. Whichever injector I connect to the red/green wire to will spray. I have carefully checked the connections at the injectors, and that is not the problem. The injector with red/blue pair will not. Both injectors are getting power, but the blue wire is apparently not being grounded by the computer, or whatever controls it. The vehicle is a 1992 Buick Roadmaster with a 5.7 litre LO5 V-8.
YOU EITHER have a broke wire or a bad pcm
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Hey Triple Auto! Sorry I didn't thank you sooner for helping me out. You solved my problem. Actually It was even easier than that. One you told me where to locate the PCM, I just cleaned an jiggled the connection and it was healed. You were a lifesaver, thanks!!!
i would of considered connecting both injectors in series, that way if no injector at all now one is open circuted, or connect in parrallel and if a wiring fault and not injectors, then they will both open relative to ecm pulse/ground/resistance etc wont do much for ya economy though
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