What does the flash code 3-4 mean for 1991 Mercury Capri

Tiny
JONATHON
  • MEMBER
  • 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
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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