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missing problem

Discussion in '1992-Present Chevy & GMC models' started by gmaniat, Dec 12, 2002.

  1. gmaniat

    gmaniat Registered Member

    Joined:
    Dec 12, 2002
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    Location:
    Lawrenceburg, KY
    I have a miss that will not go away. I have a 89 sub. brand new motor new plugs, wires, cap, and rotor button. Still have a miss. Also throws a code 42 which is the EST either grounded or opening. I have checked the wiring no obvious problems. Can someone help before I go on a rampage?
     
  2. MOABDADC22

    MOABDADC22 1/2 ton status

    Joined:
    Jul 24, 2001
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    Location:
    Cheyenne, Wy
    Check the new plug wires with an ohm meter..See if the resistance is within manufacturers specs. I had a brand new set of wires that looked intact, but had a small problem with the inner core and caused a miss.
     

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