jamnicho8

I have an 88 mustang that I put a 91 harness and computer in. Now I dont have and power going to the fuel pump and I the injectors are not firing. I can get the pump on with a toggle switch so that isn't a big deal but I need help with the injectors please. Anyone have any ideas?

GT350R

Wow.

Easy answer? You screwed up when you bought the 91 harness.

You need an 89 harness. So much different that the only thing I could say is to continue doing it wrong, and start chopping off connectors, and get some buttconnectors. Or get the right harness.

91 is a one year only harness style.

jamnicho8

The coil is getting fire, I have checked that. I will check the TPS wire when I get home today.

GT350R

The wiring come out of the dash, does not match the computer to engine harness.

Wiring locations are wrong, and the 91 harness only has a single plug to match the wires up, the harness has two.

So......your "first step" is wrong. The first step is the right harness.

uedlose

This is right. I have seen people repin the stuff but it is a boat load of work. I have the right stuff if you want to buy it $250 it is out of a 89 mustang mass air car just for the ECM to engine 10 pins.