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Thread: Hard start when cold with check engine light

  1. #1

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    08-17-2016
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    Location

    Millport, AL
    Vehicle

    1992 Dodge Power Ram 50
    Engine

    4G64

    Hard start when cold with check engine light

    Hey guys, i am working on a 1992 Dodge Ram 50 with a 2.4l fuel injected engine. It will not stay running when its cold at first start up, but starts and runs fine when its hot. Im getting codes 13,14,15,21, and 25. I have replaced the head due to valve train issues, and replaced the mass air flow sensor, idle air control assembly, and coolant temp sensor. I have checked all the circuits for shorts to ground or power, and found nothing wrong. Im at my whits end with this and dont want to just keep throwing parts on it, like the PCM but i'm running out of options. Any ideas?

  2. #2

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    06-15-2014
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    Adelaide, South Australia
    Vehicle

    1985 Mitsubishi L200
    Engine

    G63B
    You might need to ground the ECM check wire in the engine bay to set the ignition timing seeming you've had the head off. The ECM's can behave glitchy if the engine hasn't been put into timing mode. Check this link (courtesy of LSR Mike) -

    http://www.mightyram50.net/vbulletin...ht=base+timing

  3. #3

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    08-17-2016
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    Location

    Millport, AL
    Vehicle

    1992 Dodge Power Ram 50
    Engine

    4G64
    I have cleaned and checked all the grounds. I have even ohmed the circuits form each sensor to the ECM, but havent found any issues. I get the code 15 as soon as i turn the key on and codes 13,14,21,& 25 come up about a minute or two later with or without the engine running. I'll have to go back and check the timing again and see what it does after putting it in timing mode.

  4. #4

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    08-17-2016
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    Location

    Millport, AL
    Vehicle

    1992 Dodge Power Ram 50
    Engine

    4G64
    Do you have any links to the troubleshooting of these fault codes. The Haynes manual i have is very limited!!!

  5. #5



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    03-16-2011
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    Sacramento, CA
    Vehicle

    1979 Dodge D-50
    Engine

    Chevy V6
    There is a fault code thread in the tech section.
    Members come and members go, But the board keeps track of them.
    Check out the Fear Monger by
    clicking HERE.

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