I have a 91 RS camaro with the 305 TBI. Im getting voltage at the injector fuses but i cant get voltage to the injectors. The fuses are good. What comes after the fuses and can someone give me a picture and schematics that actually are good. This hanes manual blows when it comes to telling me where things are. Thanks!

 

The ignition switch feeds the fuses (INJ1 and INJ2). Each fuse then goes on to the engine harness to the injectors. These are the red & white wires at the injectors.

The diagram shows a feed through at the "engine to I/P connector". Pins B & G. Looking at what other ECM wires go to this I/P connector, it is likely located under the dash. I/P usually stands for instrument panel, but it can't be going to the cluster.

Ah, found it, connector C207. Located behind right hand side of instrument panel. Looks to be a two row connector. From there it goes on to where the ECM is and continues on to the injectors via the ECM harness.

RBob.

 

so it just goes into the ecm after the fuses then to the injectors?

 

No, the injector +12 V goes to the ECM harness and on to the injectors. Note that the ECM harness passes through near the passenger door into the engine compartment.

The only connection from the injectors to the ECM are on the low side. That is the ECM grounds the injectors to turn them on (pulse them).

RBob.