does anyone have a diagram for the fuel system on an 89 TPI 350.

my 2,4,6,and 8 injectors stoped working and the fuses are still good i am also getting spark and i have fuel pressure to the rail.
all 4 of the injectors are not pulsing?????????????????????????
are there any modules or relays i should check?

I think im chaseing a bad connection or wire.

any help would be greatly appreciated.
THANKS:

 

A wiring diagram would be of great help here. I have a Chilton book with extensive diagrams that I got from the library.

 

I have a Chilton's repair manual for Pontiac Firebird 82-94 but i can not find any diagrams that are useful in it.

Does anyone have something they can post here that might help me?

 

Each bank is powered through seperate fuses (INJ 1 and INJ 2). They should have power whenever the key is on.

Test for power at the injector. If you have power, then the injector ground is probably at fault. You'll have to check that at the ECM.

The wiring diagram wouldn't tell you much. It's pretty much: battery->fusebox->bulkhead connector->injector->ECM. Each bank's wires are twisted together, so it's real easy to trace in the harness (just look for the only wire pairs that are twisted).

 

Thanks for the help guys, it turns out that one wire had backed itself out of the connector at the ECM. I fixed it securely into the connector and replugged it and now everything is working great.


THANKS AGAIN!!!!!!