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Attention: TDR Forum Junkies
To the point: Click this link and check out the Front Page News story(ies) where we are tracking the introduction of the 2025 Ram HD trucks.

Thanks, TDR Staff
  1. T

    p2509 won't clear, and extended cranking time, low volts on dash

    I really didn't look very closely at any potential delayed behavior of the voltmeter until now, its possible it may have been like that all along. Will check that temp sensor; I read that in low temps it directs the alternator to charge at a higher voltage, or maybe a higher duty cycle. I've...
  2. T

    p2509 won't clear, and extended cranking time, low volts on dash

    Voltage differential between batteries is only around .1v when cranking, cables are pristine on both ends and over their length. Battery voltage shows 14.6 on my DVM as soon as it starts even as dash meter indicates around 11-13v, until it runs for a few minutes. then the dash meter corrects to...
  3. T

    p2509 won't clear, and extended cranking time, low volts on dash

    The cables are perfect, just tested the crossover anyway and its fine, .1 Ohms, batteries are both at 12.53v. My clamp ammeter is not working, of course... I'm going to follow all of the power for the ECM but I'm not optimistic
  4. T

    p2509 won't clear, and extended cranking time, low volts on dash

    The batteries are brand new, I replaced them right after the problem appeared.
  5. T

    p2509 won't clear, and extended cranking time, low volts on dash

    03 ram 5.9 4x4 w only 82k and never a problem. Battery was very low after not driving it for 2 weeks, barely started then CEL came on code p2509. Now takes 3 seconds to start, every time, used to be instant. Replaced batteries, code won't clear, voltmeter on dash stays at 11v until I drive for a...
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