07 5.4 3v. Truck seems to run fine and shift ok. As of right now no CE light. Code is P2006 - Intake Manf Runner Ctrl Stuck Closed bank1 a).
Is it something that needs to addressed with truck running ok. I think that it is the box on the back of the intake. Any tips on getting to it to replace it? Any thing else I should try before changing the box.

 

Nobody else had this problem?

 

Looks like Im a lucky guy.

 

I'll see what I can dig up for ya in the service manual.

 

P2006 - Intake Manifold Runner Control (IMRC) Stuck Closed (Bank 1)
Description: This DTC is set when the IMRC is commanded open, but the IMRC monitor indicates closed. This DTC replaces P1512 and P1519.
Possible Causes: IMRC monitor circuit open.
IMRC control circuit open.
IMRC monitor circuit short to VREF.
Damaged IMRC actuator or solenoid.

Diagnostic Aids: An IMRCM PID reading at VREF with an engine speed of at least 3,000 RPM may indicate a fault.
Application Key On Engine Off Key On Engine Running Continuous Memory
All GO to HU14
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HU14 DTCS P1512, P1513, P1516, P1517, P1518, P1519, P1520, P1537, P1538, P2004, P2005, P2006, P2007, P2008, P2014, P2015, P2019 OR P2020: VISUAL INSPECTION
Note: If unable to fully carry out the following inspections, answer NO to the question in this step.

Visually inspect the linkage for possible causes of binding or obstructions. Check the lever/linkage for movement. There may be some tension in one direction but there should be full travel.
Note: The IMRC return spring is strong on vacuum systems. Make sure they operate properly and the plates open and close fully. On vacuum operated systems the engine must run for 20 seconds to restore vacuum then return to KOEO for testing.

Some IMRC electrical systems are driven in both directions by the solenoid and do not use a return spring. They can not be opened manually.

Manually open and close the IMRC plates at the intake manifold while checking for sticking or binding.
Is a mechanical concern present?
Yes -- GO to HU15 . No -- GO to HU16 .

HU15 CHECK THE IMRC FOR MECHANICAL OPERATION
Disconnect the IMRC linkage or remove the actuator assembly from the manifold.
Note: IMRC return spring is strong - approximately 0.34 to 0.45 Nm (3 to 4 in-lb).

Some electric motor applications do not use a return spring and should move freely when open and closed.

Rotate the IMRC plate lever to fully open and to fully closed, contacting both limits.
Check for sticking or binding during rotation.
Is a mechanical concern present?
Yes -- REFER to the Workshop Manual Section 303-04 Fuel Charging and Controls to REPAIR as necessary or INSTALL a new IMRC. No -- GO to HU16 .

HU16 goes into measuring the voltage above 3,000 rpm and eventually ending in reflashing the pcm.

I would check the wires going to it for cracks or frays too.

The service manual shows nothing on replacing the IMRC on the 5.4 only the 4.2 But check out this article: Ford F-150 5.4 3 valve Intake Manifold Removal Looks like to get at it you have to remove the upper intake manifold.

Not sure if it's something that needs to be addressed or not. I would check the wires first at least before attempting it. Probably doesn't help much but maybe somebody else will post on this.