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2006 FORD EXPLORER
4.6L V8•4WD•AUTOMATIC•gas
4 active safety recalls on this vehicle — view recalls
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Repairs0Labor987Torque6774Fluid18DTC2122Battery2Maintenance0Recalls4
P1537low severityPowertrain

Intake Manifold Runner Control Stuck Open (Bank 1)

on 2006 Ford Explorer 4.6L V8 · 4WD

What this code means

The IMRC for Bank 1 is stuck in the open position. This affects low-RPM torque and fuel economy as the manifold runners are optimized for high-RPM airflow.

Symptoms

  • Check Engine Light
  • Reduced low-RPM torque
  • Poor fuel economy
  • Slightly rough idle

Common causes

  • Stuck IMRC actuator Bank 1
  • Broken actuator rod or linkage
  • Vacuum leak to actuator
  • Failed IMRC solenoid

Diagnostic steps

  1. Inspect IMRC actuator Bank 1
  2. Check linkage and actuator rods
  3. Test vacuum supply
  4. Test IMRC solenoid operation

Repair notes

Replace IMRC actuator if stuck. Repair linkage. Fix vacuum supply.

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🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Mechanic · 20+ years. Spot an error? Use the Help link above — a human reads every report.
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