1994 2.3L no ignition pulse or injector pulse

[bblicharski]

I recently bought a 1994 ranger, it would crank but not fire when i bought it. The man who sold it to me said it was the ignition control module. I replaced it, still no start. I went through all the electronics, found out the ecm was not functioning correctly i think the drivers were burned out, got a working unit from ebay. Still no start. I need info on the cam and crank position sensors, I dont think there triggering signals are reaching the ecm

 

[bblicharski]

I get 5v reference to the sensors, i get voltage to the coil packs, i got power everywhere it needs to be, or so i think. The injectors dont pulse and the coils dont fire, so im looking for a trigger singal, i need some help with the wiring scematics, i got a manual from autozone but the schematics are crap.

 

[bblicharski]

I have been doing my homework, it seems that there is a camshaft position sensor and a crankshaft position sensor, i believe i have a california model? since there seperate and not both on the same sensor. I am starting to think that i have a short crankshaft position sensor, it has 12v's coming off the signal side, like 10-11 when cranking because of the voltage drop. I guess i need to figure out if the wires are shorting or its an internal affair such as the ADC or the DAC

 

[bblicharski]

hey guys please give me some help? I looked into the schematics, it uses the pid from the dual hall effect sensor, the cid comes from the cam position sensor, I want to get rid of the stupid cam position sensor, wire the CID output from the dual hall effect sensor to the CID input pin on the ecu, that should work right? the crank pulley has both windows for CID and PID, this california model is starting to piss me off!

 

[BRUTUS_T_HOG]

so.. you checked that the fuel injectors and coil pack are being grounded by the ECM? or you are guessing?

if you have the crank/cam sensor that mounts behind the crankshaft hub. it should have 4 wires coming off it. 1 for 12v power, 1 ground, and 2 signal wires.

they should be putting out a 10volt square wave signal...

verify that you KNOW the coil and injectors are not being triggered and then we'll go from there.

 

[bblicharski]

I already verified that, solid B+ to the coils and injectors, no ground trigger/pulsing. So the ECU doesnt wanna drive the coil packs or injectors. I have the california model or so i take it, the truck got a new ECU which is from a 49 state vehicle. I eliminated that stupid camshaft position sensor, using the CID on the dual hall effect sensor on the crank, repinned the connected because the diagrams show that the CID input to the ECU on one is pin 25 and on the 49 state version pin 5. Not 100% gotta look at my notes, it seems like the computer doesnt wanna drive the injectors and coils because it has no idea whats going on, but i will check my PIP and CID outputs again, i remember last time i got like 12v then drop to 8v, i dont have an 0-scope and my fluke 187 from work only has so fast of a refresh rate so i dont exactly get a 100% verification. I work for cummins on generators and deal with alot of troubleshooting, this ford has got me going nuts. THanks guys!

 

[BRUTUS_T_HOG]

you need to get the exact replacement ECU or you will be chasing more problems if you can get it started.