I have put new timing chain and gears kit in my 00 Dakota 4.7. Ran great for 500 miles or so and then stalled on road. Changed plugs, cam position sensor, crank position sensor, PCM, fuel pump, and oil pressure sensor. Still wil not start. Checked for spark. Fuel pressure is 49 psi. Relays click and have swapped them out. What am I missing? Has all characteristics of bad crank position sensor.? Could I have gotten a bad sensor?

 

You said you had no codes.

No spark. Are the injectors firing? Do you have power to the coil packs? One side should be hot if the ASD relay is energizing.

 

I had spark. I do not smell gas. As much as I have cranked over it should be full of gas! I will check for hot wire at injectors. I checked crank position sensor connection. 3 wire connection. 1 & 3 read 5 volts. 2 has continuity to ground. Why would both wires read 5 volts. Thought only one would read for power and 3 was for signal. I had it disconnected.

 

No gas?

Sounds more like the camshaft position sensor. It provides the fuel sync signal to the PCM.

3 wire sensors produce a square wave output.

 

I have put 2 new CPS's in and no luck. New reprogrammed PCU. Need to fuel sync?

 

2 CKPS's.

 

2 Crank Position Sensors?

I'd be looking at the Camshaft Position Sensor.

Check all the wiring for the cam/crank sensors for damage. They do share the 5 volt supply and ground. You are checking voltage to the sensor ground???

 

Yes I thought maybe the first new crank sensor was bad so I exchanged for another. I put a new cam sensor in also. I haven't checked the wiring on the cam sensor yet. Will do that and check that there is power to the injectors.