Tach needles go lower than engine is

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  • Japandrew73
    Banned
    • Sep 2008
    • 2164

    #1

    Tach needles go lower than engine is

    recently, when i hit the gas pedal the RPM will show about 2.5k when i nkow my engine is giong about 5k. you know how you just know the sound of your car after a while? How do i fix this?
  • SamE30e
    R3V Elite
    • Sep 2007
    • 4319

    #2
    Coding plug might be fucked. But doubtful.
    1985 325e 2.8 Turbo VEMS

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