WHAT DOES THE FLASH CODE 3-4 MEAN FOR 1991 MERCURY CAPRI

  • Tiny
  • jonathon
  • 1991 Mercury Capri
  • 150,000 miles

What does the flash code 3-4 mean for 1991 mercury capri

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Sunday, February 26th, 2012 AT 6:09 PM

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  • Tiny
  • DrCranknWrench
  • Expert
  • 3,458 posts

That translates to "Idle Speed Control". More than likely the Idle Air Control Valve, IACV, has failed. It is generally located on the intake manifold near the throttle body.

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Sunday, February 26th, 2012 AT 6:18 PM

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