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Electrical problems

Discussion in '1982-Present GM Diesel' started by 6.2 man, Jun 22, 2006.

  1. 6.2 man

    6.2 man 1/2 ton status Premium Member

    Feb 17, 2000
    Likes Received:
    Curtis , WA
    I am not sure this is where I would post this kind of question....but here goes :confused: I have a 83 with the 6.2 my volt gauge will show 14 volts with nothing on . If I turn anything on it will drop to 13 volts even at hiway speeds . I have checked the alternator and I show 14.5 volts at the output post I have checked down at the starter and 14.5 . Followed the wires up to the top of the firewall and 14.5 and and the other side of that connector and get 14.5 ? Guage during this time shows 13 volts . The other day I truned the Air on high and was doing some idling around a parking lot and watched my volts drop so low the Glow plugs kicked in !!!So I know there is low voltage some where ? Please help !!!!!!! :confused:
  2. colbystephens

    colbystephens 1 ton status GMOTM Winner

    Feb 24, 2005
    Likes Received:
    can't really help with your prob, as i know nothing about electrical. however, you might get more replies in The Garage. :)

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