OK good, then that goes right along with his check engine light coming on. I'm always right...how's it feel?

 

No pic needed guys, just look at the whole t-body.... On the drivers side is the IAC controller, it's serviced as a complete assembly from Ford... Dont think the aftermarket will have em for quite a while.... Whilst it will probably be in the $300 or more range, you WILL be money ahead taking it to a dealership to have it diagnosed, unless you have $$$$$ to just throw at your truck.....

 

Last time I had it in to the dealer they took two days to tell me they didn't know why the light was on, but "come back tommorow, and we should have it sorted out". those are two days of lost fishing to me.
so far the gas filter being replaced seems to have done the trick, however if the light comes back on I will let another dealer " sort it out".
thanks again for all your responses

 

Exactly..when was the last time you really had a pleasant experience at the dealer ?!? Half them time when you have a rare problem with your vehicle they are far from being a savior or a wealth of knowledge to help fix it but are more than happy to charge you that high hourly rate, maybe some highly overpriced parts and whatever other bs environmental and shop charges they can throw on there.

 

For the idiot

I thought I saw this on here a while ago... as usual, Q comes through, and Bluegrass offers sage advice

You likely will need to have the Stealer R&R the TB assembly - along with a flash of the PCM to the latest calibration.

BTW - you won't find an EGR valve on there either - have some fun and ask the AutoPuke parts guys try and source one. Or just ask the idiot. LOL!

Good luck.

Cheers
Bubba

 

Has anyone considered cleaning it. I know on other cars cleaning the IACv solves the problem. Use CRC intake manifold cleaner. Take it out and spray it down and see what happens....Cheap fix if it works...

 

Some 2004-2006 F-150 (excludes Heritage) vehicles equipped with 4.6L or 5.4L engine, and 2006 Mark LT vehicles, may exhibit one or more of the following symptoms: drive-away hesitation, loss of RPM on deceleration, difficulty starting, and/or idle RPM less than desired. Malfunction indicator lamp (MIL) may be illuminated with diagnostic trouble codes (DTCs) P0506 and/or P0505. These conditions may appear after battery disconnect, dead battery condition, or keep alive memory (KAM) reset. The symptoms may be due to engine deposits in the throttle leading to airflow less than desired.

ACTION:
Follow the Service Procedure steps to correct the condition.

SERVICE PROCEDURE
Reprogram the powertrain control module (PCM) to the latest calibration using IDS release 53.9 and higher or 54.1 and higher. This new calibration is not included in the VCM 2008.1 DVD. Calibration files may also be obtained at www.motorcraft.com. The calibration contains a sludge compensation strategy for the throttle body.
Turn the key off to re-initialize the PCM. This will allow the sludge compensation strategy to learn.
With the vehicle in park or neutral and A/C off, start vehicle and allow engine to reach normal operating temperature (greater than 170 °F (77 °C) coolant temperature). Run an additional 5 minutes to allow sufficient learning time.
While the engine is running, using IDS datalogger or equivalent, check the PID value of ETC_TRIM.
If ETC_TRIM value is 3.0 degrees or greater then replace the electronic throttle body (ETB), following Workshop Manual (WSM), Section 303-04B.
If ETC_TRIM value is less than 3.0 degrees, and driveability concerns persist, the ETB is not the likely cause of the concern and replacement is not necessary. Continue with normal PC/ED diagnostics.

 

How many miles on the truck? My first thought is the Idle Air Control Valve. In my experiences, the IAC doesn't go out till > 80K miles.


I use the code reader on my laptop from obd-2.com. It gives you the standard and enhanced codes without the need to go to the dealership. And it's cheap.

 

napaonline.com has good pics of what the IAC looks like. Looks like a silver film canister with ears on it. Located somewhere on the top of the intake manifold.

 

You can definately try cleaning it with brake parts cleaner. I've known some people who that works for. But not for me.......if you know better, the shortcut never works. If you don't know better, it works everytime.

Just last week, a buddy told me that his Escape was dying at stoplights etc......I told him to clean the IAC and of course it worked! If I did it, no way would it have worked.

 

WOW, this tells me 'Buy the extended warranty'. Mine is covered to 100K miles.

 

the 04+ does not have an IAC...the minimum air setting is controlled by the TB itself.

 

Slaterock shows that this is not a simple system and needs understanding of the need to diagnos properly or have just plain luck fixing it.
Many of you are just guessing what the equippage is and just throwing out answers that are NA.
If you want to know what goes on with the system, go to the Motorcraft site and down load the model year overview and learn.
There you will find out there are several microprocessors involved in the TB control with fail safe sub programs and hardware not found on pre electronic control systems.
The number of issues that can now become faults are multiplied many times, over the simpleness of the old systems.
Somtimes you can even cause a new issue and become quite confused.
And btw , dealer mechanics are 'often', not always, not good at doing this or are prevented from doing it in the interest of getting the vehichles out the door and then worry about returns for the same complaint later because that's the way the dealer owner want's to run the shop. It's not that it can't be done but often not being allowed due to maximizing shop profits part of the biz..
73 KM3F

 

Bluegrass, I went to motorcraft.com and did some looking around. Where can I download the model year overview information? Couldn't find it.

Thanks

 

Go to this address www.motorcraft.com/default.jsp.
There you will click on tech resources.
Go to the OBDII model year and motor you have.
It will be more than 100 pages but then you have all the info you can use to understand most of the operations that go on.
You may have to read the sections over 3 or more times to get an understanding but that is the best you can do as an owner to get a understanding about how the specific operation works