intake manifold runner control

[bmn88]

I am looking for help on the intake manifold runner controls on a 2003 ranger, 2.3L. i'm getting a code P2004, and a rough idle. I would greatly appreciate any help.

 

[Tbars4]

...What code are you getting???..:scratch:

 

[bmn88]

obd II dtc P2004

The code is P2004, it gives a description of intake manifold runner stuck open, bank 1.

 

[Tbars4]

..From what I can find you need to check the vacuum line to it...This may be of some help..

Intake Manifold Runner Control Systems

The Intake Manifold Runner Control (IMRC) consists of a remote mounted, electrically 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/Escort IMRC uses a motorized actuator
mounted directly to a single housing without the use of a cable.)
The 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.)
The Intake Manifold Swirl Control used on the 2.3L Ranger consists of a manifold mounted vacuum actuator and a
PCM controlled electric solenoid. The linkage from the actuator attaches to the manifold butterfly plate lever. The
IMSC actuator and manifold are composite/plastic with a single intake air passage for each cylinder. The passage
has a butterfly valve plate that blocks 60% of the opening when actuated, leaving the top of the passage open to
generate turbulence. The housing uses a return spring to hold the butterfly valve plates open. The vacuum
actuator houses an internal monitor circuit to provide feedback to the PCM indicating butterfly valve plate position.
Below approximately 3000 rpm, the vacuum solenoid will be energized. This will allow manifold vacuum to be
applied and the butterfly valve plates to remain 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.

IMRC System Check Operation:
DTCs P1516/P2014 - IMRC input switch electrical check, Bank 1
P1517/P0219 - IMRC input switch electrical check, Bank 2
P1520/P2008 - IMRC output electrical check
P1518/P2004 - IMRC stuck open, electric operated
P1537/P2004 – IMRC stuck open, vacuum operated, Bank 1
P1538/P2005 – IMRC stuck open, vacuum operated, Bank 2
Monitor execution Continuous, after ECT > 40 deg F
Monitor Sequence None
Sensors OK
Monitoring Duration 5 seconds

 

[bmn88]

thanks

Thanks for the info, now I know what i am dealing with at least. This will be a great help.