I have a dodge Ram B2500 Van with a 5.9L gas engine. The van stalled while driving down the freeway. Towed it back to the shop, Started testing, I replaced the Coil, the Distributor Pick up coil, Cap Rotor, Plugs and wires. I am not getting spark from the new coil, when i remove the power connector from the coil and test with a DVOM i get 11 Volts when cranking at the connector but disconnected from the coil. When you connect it to the coil there is no spark. I am baffled and belive the ECM may be the issue. at one point i had a diagnostic code of P0351 and a P done. when i looked up the code it states that there is a "coil A primary or secondary ignition wiring issue". I have not been able to find a manual to show me the wiring diagram for this vehicle. Any Help would be appreciated.

 

I'll move this over to the 2nd gen section to get you some answers.

 

you got another van you can swap the computer with? im kinda with you im baffled too. i dunno what would not let the coil spark.

 

Have you checked the crank position sensor?

 

Yes, I did check the crank sensor and replaced the distributor pick up coil, We have 11.8 volts when cranking and the coil is disconnected. When we hook the coil up i get no voltage. I checked from the B+ to ground when cranking and connected to the coil and have 11.8 volts. I checked the ground pulse and have a nice looking square wave but the resistance on it is at 1K ohm at the lowest. I think it might be a PCM issue. I pulled the maintenance records for the van for the last 7 years and found that it has had the coil replaced twice and only had a cap and rotor change once int he 146,000 miles of service. I changed the cap and rotor also this time around. We bought it used from a contractor that went out of business and had the maintenance records.

 

I assume you are talking about at the coil for those voltage measurements? Are you getting injector pulse when cranking?

Its possible that the power feed to the coil has an issue somewhere, and while it will measure out with good voltage, put a load on it, and it fails. You could try running a wire directly from the battery to the coil + feed, and see if that makes any difference.