'03 LS V8 Throttle Body Nightmare HELP!!

[danielsatur]

Try to find a place that will do a bench test on the PCM.
What happened to the original Throttle body?

Cheap Throttle body test -
1) Remove Air duct work going to the throttle body.
2) Have helper to turn the key ignition on with the Engine off.
3) Have him/her push the electronic accelerator pedal to the floor while you observe
the throttle plate, and make sure they run in sync with the pedal to metal.
4) Do a 1/4, 1/2, and a WOT.
5) Wiggle + lightly tug signal wires during the throttle plate test to make sure there' s
no lost signal.

Caution - Don't force your throttle plate to open by hand, let the electronic pedal do the work.
If it's sticking, use WD40, Q-Tip & micro cloth for cleaning.

Drive-by-wire system -
Electronic accelerator pedal > PCU > Electronic Throttle body
In most case's it's a dirty Throttle body, bad connector, or broken wire.

We had 1-bad Electronic Accelerator Pedal on a Jaguar for a $700 fix, it was actually fixed for under $2.00 with radio shake parts.

Note - Any oil/water contaminated COP's can be cleaned with CRC electronic cleaner.
I would save some money for new valve cover gaskets, spark plug boss seals and new 3rd generation secondary cam chain tensioners before your engine gets wasted.

[danielsatur]

I wonder if this car got fixed yet?
Most discoveries + solutions are found by the technician, ask Mr. Gasket!

[Jbracker1]

Hello I have a 03, v8 as well and am now experiencing the same problems. I took it to several different places and all the codes read "throttle body" it could very well be the throttle body but after reading this and doing some research it seams to be pointing me to my sensors. I had a used throttle body put in already by ford and it's doing the same thing. So I took it to mideke and the codes rang throttle body and they said I shouldn't put an after market throttle body in because of the programming issues with the piticualar piece. They suggested I should buy a brand new one...........
Helpppp please

[Michamee]

Hi everyone.. I have an 03' Lincoln ls v8. It has 160,000 miles and suddenly car overheated. I replaced the water pump and put on new o rings for the water pump housing. Ran fine for about 30 minutes then began to overheat again. Ended up being a bad radiator cap (fingers crossed) because Ive been unable to drive it due to the fact that it is in "ENGINE FAIL SAFE MODE". Now I have a total of 8 codes and they are P0223, P2106, P0123, P0223, P2100, P2106, P2107, P2110. i have no idea if the original problem of it overheating is fixed but hoping so. Now what do I do about all these codes??? Please help!

[shorod]

You actually only have 6 codes since P0223 and P2106 are repeated in your list.

All six of the codes are related to the electronic throttle body. There are a few other issues that can cause throttle body codes due to electrical noise such as water leaks at the base of the windshield and coil on plug (COP) misfires if I recall correctly. It's been quite awhile since I've read about those so I'll leave that as an exercise for you to search this forum for that detail.

If none of that pans out, you might actually have an issue with the electronic throttle. Here's what the diagnostic codes are defined as:

P0223 - Throttle Position 2 (TP2) sensor circuit high input
P2106 - Throttle actuator control system - forced limited power
P0123 - Throttle Position 1 (TP1) sensor circuit high input
P2100 - Throttle actuator control motor circuit open
P2107 - Throttle actuator control motor processor
P2110 - Throttle actuator control system - Forced limited RPM (this code is likely triggered by the P2100 and/or P2107)

-Rod