Starter voltage drop

Discussion in 'High Performance Modifications' started by 74cam, Nov 1, 2008.

  1. 74cam

    74cam Veteran Member

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    Working on the latest pain in the ass. I am trying to diagnos my starter problems and have a question, how much should the voltage drop when you crank the motor over?
     
  2. Todd80Z28

    Todd80Z28 Moderator Staff Member Lifetime Gold Member

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    Do you mean battery voltage? Mine drops down into the low 10.x range when actually cranking, at least initially. I'm using a Honda Civic battery that's 40% lighter than our stock battery, so that's part of the reason.

    I just had to replace a starter due to poor cranking problems. It would drag that battery down into the 8.xx volt range, and crank really slow. I'm guessing the solenoid was going bad in some manner- internal insulation melting off or somesuch. Problem went away completely when I put the new starter on.
     
  3. 74cam

    74cam Veteran Member

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    Mine was dropping to the 8 range. But I think I found the problem, Bad connection. Thanks.
     
  4. Maliboost

    Maliboost Veteran Member Lifetime Gold Member

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    It should hold 9.5 for 5 seconds of cranking, measured @ the battery.

    Bob
     

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