Originally Posted by Foxtrot
Ok I'll double check that but the tranny came out of the same car the engine did and the mustang has always been a manual. The other thing is that the engine and tranny are from a 1990 and the new mustang is a 1992 also it has always been a v8 car. I was also wondering if a faulty cliche safety switch would cause the car to start but prohibit the power to be sent out to the other sensors? In the chitons manual it seems that's where the power wire first starts after the computer. I'll see if I can find a picture to show you what I'm talking about. It's hard to explain. Thanks TH
I don't think it could do that, but who knows for sure.
Look in the Useful Info thread for Very Useful and Old Fuel Injection links.
Go to those sites and try to find an EECIV pinout for the year ECU you have.
That should help you determine which wires do what and which one(s) may be responsible for your issues.