when i barely push down on the gas pedal once up to speed i get a shutter which feels like it either is in my throttle body or in my transmission, but if i let off of the gas and push it down a little further i do not get the shutter but i do not have full power. I have pulled my throttle body off and cleaned the carbon out of it and everything that i read about DTC p2106 refers back to the throttle body. I called a ford dealership and asked a mechanic about the code and he said that normally it is the trottle body. Just wanting to see if anyone else has had this problem?

 

Sounds like it is in limp mode. Have you cleared the codes - reset the computer.

 

its not in limp mode it has power, i can mash down on the gas pedal and it will kick into overdrive, but as it is getting up to speed it feels like it will hesatate and go all at the same time like it is misfiring or starving for fuel. the check engine light will flash and it came on and remained on. went and had the code read and it was p2106 was going to replace the spark plugs for starters but started pulling one of the eight out and it was really tight and hard to turn so i snugged it back up so i would have a vehicle to drive for the week. i have taken the negative battery cable off and turned the ignition key to start several times which turned the check engine light off. How do i reset the computer?

 

Limp mode - fail safe. It sure sounds like it to me. But it is hard to be sure from here. The symtoms you describe are the exact symtoms that I have had in the past, before I started cleaning my TB as part of my PM protocol. Same code too by the way.

The P2106 code you are getting is a generic SAE code for throttle actuator contol problems, normally associated with a sticking throttle plate. Associated with this genereic code is "Forced Limited Power". It feels like it is not running on all cylinders because it is not running on all cylinders.

Soft codes are not always removed by disconnecting the battery. There are several OBD II readers out there, ranging from $40 - $400. With a decent code reader you can get manufacturer specific codes. With the OBD II diagnostic tool, you can clear selected, or all codes. I won't reccommend one because that will get your thread hijacked into a "which one is best" discussion. I would suggest that if you are going to purchase something in the higher price range (the $400 unit I mentioned has ABS capabilities - along with other more advanced features) you might consider buying a performance programmer. Most will let you read and clear codes, not to mention all the performance upgrades and features at your fingertips.

Meanwhile go back to your parts house and ask them to clear all codes.

Hope this helps.

 

How many miles are on the truck and have you changed the fuel filter recently?

 

a flashing check engine light should have set misfire codes i would think. The hesitation under light acceleration could be a throttle body issue "especialy since theres a code for it" but sounds like an ignition misfire. I've seen some fords not set misfire codes even with dead misses. Your engine also may be the one that the spark plugs break when coming out. The last one I did in the shop, every sparkplug broke while removing them even after soaking plugs overnight with top engine cleaner. I used an aftermarket removal tool and finished the job in 4 hours I've seen another tech take a day and a half to do the same job. good luck

 

TECHNICAL SERVICE BULLETINS
08-07-06
SPARK PLUG REMOVAL INSTRUCTIONS 4.6L 3V / 5.4L 3V / 6.8L 3V
SOME 2004-2008 F-150, 2006-2008 MARK LT, 2005-2008 F-SUPER DUTY, EXPEDITION, AND NAVIGATOR, WITH 5.4L 3-VALVE ENGINE; 2005-2008 MUSTANG, 2006-2008 EXPLORER, MOUNTAINEER, AND 2007-2008 EXPLORER SPORT TRAC WITH 4.6L 3-VALVE ENGINE; 2005-2008 F-SUPER DUTY, 2006-2008 AND F-STRIPPED CHASSIS, WITH 6.8L 3-VALVE ENGINE MAY EXPERIENCE DIFFICULTY WITH SPARK PLUG REMOVAL. THIS MAY CAUSE DAMAGE TO THE SPARK PLUG AND LEAVE PART OF THE SPARK PLUG IN THE CYLINDER HEAD. AFFECTED ENGINE BUILD DATES ARE AS FOLLOWS: 5.4L 3V AND 6.8L 3V BEFORE 10/9/07, 4.6L 3V BEFORE 11/30/07. REFER TO THE SERVICE PROCEDURE FOR TECHNIQUES TO REMOVE THE SPARK PLUGS AND EXTRACT BROKEN SPARK PLUGS.
See TSB for complete details
EFFECTIVE DATE: 04/02/2008

 

my truck has 84000 on it and i have not changed the fuel filter on it. I was pulling out of the parking lot today from work and every warning light came on ABS, Park Brake, Check Engine and the Service Engine light came on and it defiantly went into limp mode. stopped and had the code read and the only code that came up was the p2106 code, had it cleared and before i could get out of the parking lot all lights came on again. I am going to change the fuel filter, spark plugs, and the throttle body. I am hoping this will take care of my problem. do i need to get my computer reset or reprogrammed since i am changing the throttle body so it will relearn a new TPS? Any help in this matter would help greatly!!!!!!!!!!!!!!!!

 

Dang. No, you won't need to have the computer flashed. It should learn the New TPS within 3 drive cycles - or about a hundred miles.

Have you done the diagnostics on the TPS? Maybe you posted but I don't recall - are you sure it is the culprit? I just hate to se you drop the dough on an new throttle body if you dont have to. The P2106 code is associated with the TAC. If you need info to diagnose them, post up and I will scan the proceedures and get them to you.

Also note: there are two TPSensors/ TP1 is used by the ETC module as the actual TPS. TP2 is used as a reference sensor. Not sure but depending on the price per, it might be a good idea to determine which one is bad.

 

This is a forced limp mode condition due to a failure in an ETC related component or module. That means its not necessarily the TB. The pinpoint tests in the service manual point to a failure in the ABS system when this DTC does not accompany any other DTCs, strangely enough. Specifically, it mentions checking for wheel speed sensor concerns.

You need a reader that can read ABS codes. There are ones on ebay that interface with a laptop via usb that are around $40. You can get free programs online that will read the ABS codes. If there is an issue with a wheel speed sensor it will give an ABS code.

 

i would like to have the troubleshooting proceeders for testing the two TPS and i will have to either buy me a reader or take it somewhere that will read the ABS system. I am greatful for everyones help on this but it cant hurt to go ahead and change the fuel filter and the plugs just for the sense of security and piece of mind

 

The throttle body i was going to buy was from a salvage yard that was going to give me the entire throttle body with everything on it for $100.00 I still wanted to make sure that was the issue before i even paid for it. I am at a loss here dont really know what to do or where to really start.