electrical issue?

Discussion in 'P Pump' started by Montgomery Farms, Oct 24, 2011.

  1. Montgomery Farms

    Montgomery Farms Member

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    i have a 94 12V and now that its getting colder in illinois the truck is just starting to show signs of hard starting but im not too concerned about that. after i start it, it seems like something is flipping on and off. voltmeter will pull down a long way for a second or two then hop right back up. it will do this about every 10 seconds and it cant be good... im not sure what would be turning on and off though... iv changed about every setting in the cab. (ac, defroster, etc.) and it still will do it. it stops as it gets warmed up and i get down the road a ways. it just has to be hard on the alternator or something!

    Thanks for any help!
    -Austin
     
  2. ramhunter9

    ramhunter9 Supporting Member

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    Bring it by the house one of these nights so I can see it . We will check the voltage ect In the mean time these guys will give you some tips on what to look for .
     
  3. Mopar1973Man

    Mopar1973Man Senior Member

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    Don't sweat it... Totally normal... It the grid heaters. The pull over 195 Amps during post starting. Everytime they come on the alternator is fighting to keep up with its small 120A supply and can't so the voltage on the gauge falls and the lights dim. Like I said totally normal.

    Mopar1973Man's Dodge Cummins Articles - Grid Heater
     
  4. ramhunter9

    ramhunter9 Supporting Member

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    Well there ya go ^ Mountain man comes threw ... Michael might me calling you today UPS is dropping of my BD turbo
     
  5. Montgomery Farms

    Montgomery Farms Member

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    Thanks Mountain Man! it makes sense now that i think about it lol.
     
  6. ramhunter9

    ramhunter9 Supporting Member

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    Now tell us how your injector swap went on the 12v
     

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