2004 runs for 2 min then dies
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Joined: Aug 2007
Posts: 3,901
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From: On the Farm, Manitoba
1. Set parking brake
2. Disconnect negative battery cables on both batteries
3. Turn ignition key to run(to drain any remaining capacitors)
4. Let truck sit for 30 minutes( this is the recommended minimum)
5. Return ignition to OFF position
6. Reconnect both batteries and secure, not a timed event
7. Turn key to run position(not start) and depress accelerator pedal slowly all the way to the floor
8. Allow pedal to return to top position slowly
9. Turn ignition switch OFF
10.Release parking brake
good luck.
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Joined: Sep 2019
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FCA is the Fuel Control Actuator. It determines how much fuel goes into the injection pump. The more fuel the more pressure. My thoughts were that the ecm is shutting off the fuel with the FCA and with no fuel the pressure drops until the truck quits. To confirm this I tried testing the old FCA that came off of this truck and it works, then I went to the map sensor and checked the wiring and replaced the map sensor and it still reads 14 lbs at all times. So my thought was that the ecm was reading it wrong. I replaced the ecm today and the replacement made NO difference. I still have 14 lbs of boost and it still quits when the fuel pressure drops off. The only computer that Chrysler sells for this is a reman. If they put either one of these in a test bench they will test good because it will take 30 minutes or more on a cold start to fail. If they had a bad bunch of these then I will go nuts trying to fix this. I find this unlikely because no one else seems to have this problem. The good news is I am learning a lot about these common rail trucks and I also learned that I will keep my VP44 truck forever. Changing a VP44 is a piece of cake compared to these common rail trucks. lol.
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Joined: Sep 2009
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I think your scan guage and map sensor are telling you the absolute pressure not the relative pressure. In other words compared to a vacuum you shop is at approx 14.7 psi depending on elevation
Have you checked the air track? I had an issue where excessive sand was building up in the filter. Under load the sand sucked up into the filter and blocked it. Acted like a complete blockage and was very intermittent
i found it by tracking the map sensor. I found that it dipped below 14 (ie a vacuum) which of course should not happen
just an outside the box suggestion
chay
Have you checked the air track? I had an issue where excessive sand was building up in the filter. Under load the sand sucked up into the filter and blocked it. Acted like a complete blockage and was very intermittent
i found it by tracking the map sensor. I found that it dipped below 14 (ie a vacuum) which of course should not happen
just an outside the box suggestion
chay
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