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P2004 MERCURY

P2004 MERCURY - Intake Manifold Runner Control Stuck Open Bank 1

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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P2004 MERCURY Possible Causes

  • Intake Manifold Runner Control (IMRC) monitor signal shorted to power
  • Faulty Intake Manifold Runner Control (IMRC) actuator
  • Faulty Intake Manifold Runner Control (IMRC) solenoid
  • Damage Powertrain Control Module (PCM)
  • Blocked vacuum hoses

First diagnose P2004 MERCURY code

    Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded terminals.

P2004 MERCURY Tech Notes

There is a factory service bulletin for the following Mercury Models:

2006 Mountaineer
Mercury Factory Service Bulletin OBDII Code P2004

Cost of diagnosing the P2004 MERCURY code

    Labor: 1.0

    The cost of diagnosing the P2004 MERCURY code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

When is the P2004 MERCURY code detected?

The P2004 is set when the Intake Manifold Runner Control (IMRC) is commanded closed by the Powertrain Control Module (PCM), but the IMRC indicates open.

P2004 MERCURY Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P2004 Mercury Description

The Intake Manifold Runner Control (IMRC) is an electrically actuated system consisting of a motorized actuator with an attaching linkage for each housing on each bank. The linkage attaches to the housing butterfly plate levers. Each IMRC housing is an aluminum casting with two intake air passages for each cylinder. One passage is always open and the other is opened and closed with a butterfly valve plate. The housing uses a return spring to hold the plates closed. The motorized actuator houses internal switches to provide feedback to the Powertrain Control Module (PCM), indicating linkage and plate position. Under about 3000 rpm the vacuum solenoid will be energized. This will allow manifold vacuum to be applied and the butterfly valve plates to stay closed. Above approximately 3000 rpm , the vacuum solenoid will be de-energized. This will allow vacuum to vent from the actuator and the butterfly valve plates to open.
OBDII Code P2004 Mercury - Intake Manifold Runner Control Stuck Open Bank 1 - AutoCodes.com

P2004 MERCURY More Information

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P2004 MERCURY Comments

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