levi.fogg

I have a 06 Mustang 4.0 and I recently installed a supercharger and swapped out the fuel injectors. After doing all this the ECU will not deliver fuel to my number 6 cylinder. The reason I say it is my ECU is because I have tested the coil pack, plugs, plug wires, switched injectors and even tested the wiring for the injector and they are all good. So it has to lead back to the ECU. Any thoughts or solutions would be greatly appreciated.

GrayPony

Is the car throwing any codes?
Check that the plug wires haven't been mixed up.

tx_zstang

Have you cheked the injector wiring all the to the pcm connector?
Check for voltage/signal at the injector, compared to other cylinders?

Can you datalog the cyl. 6 injector data? See what the PCM thinks is going on with it, if anything.

If there's no pulses to the injector whereas the others do have pulses, then yes, the signal from the pcm is missing. Then it's a matter of seeing if it's coming out the PCM at all. If not, then you could need a PCM. (I have one from a '05 that is compatible, for cars with an automatic).

For checking signal pulses, a oscilloscope is best, you you can use an analog voltmeter and see the a/c pulses as well, at idle, and compare to a working injector.