I have a 1989 F350 7.5L Gas, The prior owner installed new distributor, It had mis firing going on so I installed new plugs/ wires it still had slight shudering issues under load. So the other day I went out to warm it up before I left for work, It was idleing fine, then you could here the motor slowly lower its idle till it just stopped now I cant get it to fire back up, It took coil wire off to see if it was getting spark, it was. I pull spark plug wire off to see if it was getting spark and it didnt, Could this be the ICM? mine is mounted to the side of the distributor.

 

So the Coil puts out spark, but it doesn't reach the plug?

I'd think you have a bad wire/cap or rotor.

 

Sounds like a fuel problem. Check the fuel pressure at the fuel rail with a gauge and pin #6 grounded of the self-test plug and the key on. It should be 40-45 PSI for an 8 and around 60 PSI for a 6.

Also check to see if you have any codes in the computer.

 

Is there a PCM or a Electronic Pick Up?

 

Isnt the pcm and icm the same? if it is its located on the side of distributor.

 

PCM, Powertrain control module

ICM, Ignition control module.

ICM some years its on the distributor and others on the inner fender

 

No they are not.
The ICM can be located on the side of the Distributor but the PCM is located in the drivers kick panel.

 

Just check it again put a spare spark plug at the end , turned it over saw little spark

 

You have both.
You have the PIP sensor (stator) located inside the distributor and the PCM Computer in the drivers kick panel.

 

what does pip sensor look like and even do

 

Electronic pick up aka stator is located inside the distributor, it take the spark produced by the coil and distributes it through the wires. These crap the bed often. Easy fix but you have to pull the distributor.

 

Hold the phone< I'm a retard!! My wife suggested to me to ask my buddy to come over and help, I perceded to tell her that I could handle it and wasnt going bother him. either way My buddy came over and ask me if when I reset the dist, was the piston tdc on the power stroke , DUH , guess what I was 180 Degrees off. Thanks Matt and OH YES MY WIFE IS AWSOME AND RIGHT.

 

Now it runs just have to figure out its shuddering issue, Need to put in the exhaust donuts, go from there.

 

Well no it does not do that but that is where it is located.
The short story:
The PIP sensor is a switch that is switched off and on by a shutter wheel. This off and on signal it generates is sent to the ICM and the computer. The ICM turn the power off and on going through the Ignition Coil to fire the spark based on the PIP signal.

The long story:
The CMP (hall effect PIP) sensor is a digital output device located within the distributor. A rotary vane cup, used to trigger the hall sensor, is mounted on the shaft of the distributor and is made of a ferrous metal. When the window of a cup is in the air gap between the hall device and the permanent magnet, a magnetic flux field is completed from the magnet through the hall device and back to the magnet. This condition results in a low (0 volts) output signal. As the distributor shaft turns, a tooth on the cup will move into the air gap. The magnetic field will be shunted by the tooth, preventing it from reaching the Hall device, and the output signal will change from a low to a high (B+).

On engines having sequential electronic fuel injection (SFI), one tooth on the vane cup is smaller than the rest to identify when cylinder No. 1 is at 10 degrees BTDC. The width of the PIP signal generated by this tooth is smaller than that of the other teeth and is called signature PIP . It is required by the PCM so that it can accurately control the sequential firing of the fuel injectors.

 

does the 89 f350 7.5L FI have sequential injectors