Unknown Problems.

Discussion in 'Engine & Performance' started by bluwarguy, Dec 26, 2016.

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  1. bluwarguy

    bluwarguy Member

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    Ram Year:
    1997
    Engine:
    5.9 Magnum V8
    Whenever I accelerate hard (like when I pass somebody on the highway) I've noticed that my check engine light starts to flash. The check engine light is also on and gives me 2 codes: 12 and 43. My oil consumption is awful and I have to constantly buy oil for my truck. Sometimes when starting it in the cold, it doesn't like to stay on and I have to slightly give it gas for about a minute and it'll stay on. If not then it sputters and dies. Are any of these problems related and what could the main problem be?
     
  2. dudeman2009

    dudeman2009 Senior Member

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    Oil consumption followed by cylinder misfire (Generally what the flashing CEL means) on a dodge means its time for the plenum.

    Code 12 just means the battery has been disconnected within a certain number of ignition cycles.

    Code 43 could be a couple things but usually is random multiple cylinder misfire.

    I'd go with the plenum but you can also check your ignition coil.

    Measure the resistance of your coil from the tower to a pin on the input you should get about 12k-15kohms. Between the two input pins should read about 1-2ohms. If either is wildly off, replace the coil.
     
  3. bluwarguy

    bluwarguy Member

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    so Code 43 could be fixed with the plenum kit?
     
  4. pajeepman

    pajeepman Senior Member

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    Oil loss without visible leak is almost certainly a plenum issue. I replaced mine with an aluminum one from ebay. No issues for 4 months so far.

    Sent from my SM-J320P using Tapatalk
     
  5. dapepper9

    dapepper9 Senior Member

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    Yes start with plenum and in the process of doing it do a tune up as well
     
  6. bluwarguy

    bluwarguy Member

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    I bought an OBDII reader and found that the code is specifically P0308, so Cylinder 8 is the one misfiring.
     
  7. dudeman2009

    dudeman2009 Senior Member

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    Cylinders 7 and 8 are the most common ones to go with plenum issues.
     
  8. dapepper9

    dapepper9 Senior Member

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    Cylinder 8? Plenum
     
  9. pajeepman

    pajeepman Senior Member

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    Plenum guaranteed. Same problem i had minus the not staying running.

    Sent from my SM-J320P using Tapatalk
     
  10. Truemagnum15

    Truemagnum15 Junior Member

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    We recently bought an aluminum plenum kit from Hughes engines and it included all gaskets, bolts, etc. needed for $142 total for shipping and the kit.
     

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