Question about 2003 Ford Focus

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I had this one asked before,and i got advice but i am still in the dark .focus 1.8tdci 2003.there is a butterfly on the intake manifold and when i turn the key off it fully shuts for a sec than opens up fully just after engine comes to full stop.and i would like to know what is it suppose to do when starting focus is very hard to start and this item is the one might be responsible for it.if i close the butterfly manually before starting and as i turn the key i let it open the car starts perfect.this part does not do anything else even when engine is running it is fully open.

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This is known as the choke mechanism and is to be open when running it is out of sinc and needs to be reprogramed best place a dealer

Posted on May 28, 2011

  • jobbfasz May 28, 2011

    i will never take my car to a dealer!if that's the best answer than i scrap the car and will never buy a ford again.they work by the book,that's all they know,i am sure some one knows what to do.

  • tim fredrickson May 28, 2011

    ok then look for a automotive shop thatcan reprogam the car im sorry you have had bad dealings with dealers i understand i often fought with managers when i worked for dealers that wernt above board in there practises



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Trouble code p2004 & p2008 ford focus 2003, how do i fix problem?

There is a rod passing through the intake manifold that rotates butterfly valves inside the ports. It is actuated by a lever on the end of the manifold that is moved by a small motor. The codes indicate that the actuator is not functioning or the rod is stuck from turning. Check the connector to the motor and the wiring. See if you can rotate the rod by hand.

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Intake Manifold Runner Control stuck open the problem is that the actuator the plug that goes to it the black blue wire has only 3 volts suppose to have 5

Does the actuator have butterfly's controlled with an arm to the actuator? If so, the bushings for that actuator ma cracked and the arm fell out. It may not be the power.

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2003 ford focus 2.3 litre DTC P2004 intake manifold runner control stuck open. What does it mean when it says shorted to VREF or signal circuit shorted open or shorted to VPWR.

code p 2004 refers to intake manifold air control actuator bank 1--actuator stuck open===causes --wiring--intake manifold air control actuator---mechanical fault
it also refers to intake manifold air control solenoid bank 1--solenoid stuck open=== causes --wiring---intake manifold air control solenoid---mechanical fault
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I cannot find reference to the VREF or VPWR as they may be referenced in a ford workshop manual so you may have to ask a ford service person what they stand for but I suspect that they will come back to the same thing as listed in the causes

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2004 ford f 150 5.4 3V pulled intake fixed vac hose came off replaced imrc & still show intake runner control closed bank 1 Still has no power when I get in it to pass something any ideas?

Is your check engine light on ? Any codes ?

There are three basic types of intake air sub-systems:

  • Intake Manifold Runner Control (IMRC) electric actuated system

  • Intake Manifold Swirl Control (IMSC) vacuum actuated system

  • Intake Manifold Tuning Valve (IMTV)

These subsystems are used to provide increased intake airflow to improve torque, emissions and performance. The overall quantity of air metered to the engine is controlled by the throttle body.

Intake Manifold Runner Control (IMRC) Electric Actuated System
The Intake Manifold Runner Control (IMRC) Electric Actuated system (Figure 107) consists of a remote mounted motorized actuator with an attaching cable for each housing on each bank. Some applications will use one cable for both banks. The cable or linkage attaches to the housing butterfly plate levers. The 2.0L (2V) Focus IMRC uses a motorized actuator mounted directly to a single housing without the use of a cable. 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 butterfly valve plates closed. The motorized actuator houses an internal switch or switches, depending on the application, to provide feedback to the PCM indicating cable and butterfly valve plate position.

Below approximately 3000 rpm, the motorized actuator will not be energized. This will allow the cable to fully extend and the butterfly valve plates to remain closed. Above approximately 3000 rpm, the motorized actuator will be energized. The attaching cable will pull the butterfly valve plates into the open position. Some vehicles will activate the IMRC near 1500 rpm.


  1. The PCM uses the TP sensor and CKP signals to determine activation of the IMRC system. There must be a positive change in voltage from the TP sensor along with the increase in rpm to open the valve plates.

  1. The PCM uses the information from the input signals to control the IMRC motorized actuator based upon rpm and changes in throttle position.

  1. The PCM energizes the actuator to pull the butterfly plates open with the cable(s) or linkage.

  1. The IMRC housing contains butterfly plates to allow increased air flow.

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1 Answer

What causes the 2002 ford focus to be lazy?

The main, common issue with the Focus was the intake manifold. It's made of plastic and is prone to cracking and it's inner butterfly flaps cracking off and entering the engine, causing issues and failure in extreme cases.
Also check the catalyst condition. I've had one focus with a meted down cat, which caused blockage in the exhaust system, dramatically reducing power.

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Check and verefy this firing order...

2003 Ford Focus 2.0 liter DOHC L4 VIN "5" and VIN "3"

2003 Ford Focus 2.0 liter SOHC L4 VIN "P"

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