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Not starting after warm

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First real post here, been lurking in the back ground but now I have a issue you all might be able to help me with. Ok got a 02 gen 2 nv5600, air dog pump. Start it in the morning to warm up (plugged in over night) and blocked wheels cause my driveway is on a incline and my ebreak is not the strongest. Come out to leave and have to put it in gear and shut off truck then remove blocks. Go to start back up and will not start just cranks but does not fire. Now I've been able to get it to start 2 different ways when this happens, either with ether or with my smarty using it to clear the 4 codes it shows. Those codes are as follows.

P0232
P0230
P1475
P1693

Now ive been told i need a new vp, a new pcu or ecu, could be ground issue, could be fuel pump relay issue (already replaced).

Who has had this problem? What was your solution?

THANKS IN ADVANCE!

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  • KATOOM
    KATOOM

    Whats happening then is the AD is running at a full 18 psi (your setting) when the key is ON.  This means the VP is receiving fuel incoming pressure while the engine is cranking, which then increases

  • dripley
    dripley

    I should say that I have NOT heard it in a good while. My heating aint what it used to be. You reckon 434k in the 2nd gen might have something to do with it?  

  • jlbayes
    jlbayes

    Fuel pump relay is ONLY for the vp44 in these trucks. It looks like the ecm 5v ref is shorted based on the P1475.

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So after doing some hard searching we where able to find the issue I hope. The funny thing is i just replaced it last week with a cheap one from Oriellys. The fuel pump relay. Replaced it with a Dodge relay and it starts right up with no issues been tested all day so far. Hope this is it. 

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    Is this an aftermarket relay or in fues box I'm just curious, if you got a picture be even better for reference, thanks. 

    • Author

    I try to get the old one tomorrow and take a side by side of the original and the one from Orielly's. 

     

     

    20180219_171051_resized.jpg.932babc5ddcf9e2c5ffb9710cea1b29b.jpg

    I believe @Dieselfuture is asking where the relay is installed. In the PDC or an after market harness. My money is on the PDC for the VP.

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    2 minutes ago, dripley said:

    I believe @Dieselfuture is asking where the relay is installed. In the PDC or an after market harness. My money is on the PDC for the VP.

    My bad it was in the PDC for the vp.

     

    2 minutes ago, Mopar1973Man said:

    If so there should be a P1689 error code from the relay failing and the CEL should be on.

    I checked for codes with my Scangauge II and there was none. I will check with my smarty s03 tomorrow.

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