Nikusha Machavariani

Hi all! I have a stock V6, 4.0 Mustang of year 2005. Just like many of us I also got the failsafe mode and the car won't drive faster than 5 miles an hour. The codes I got are P2112 and P2104 codes. As it seems there is a problem with the throttle body and/or the PCM. In the first place I decided to take off the throttle body and clean it with the special cleaner. I installed it back, plugged everything back in, but it didn't help. Now before ordering new throttle body and PCM I have few thoughts on mind:

1. Can it be that the TB and PCM are ok but there is some kind of an electrical problem with the wiring, an open wire, or a shortage for example?
2. Can it be that one of the two, either TB or PCM are ok?

Mostly TB is sold together with the PCM and most parts shops don't return parts after even a single try on use. I am trying to avoid extra cost and don't want to buy a part that I might not need.

Any thoughts?

Thanks!!!

SpectreH

Did you reset the computer after cleaning the TB?

Nikusha Machavariani

How does that work?
After cleaning I tried to delete the codes with my OBD but they kept coming back.

SpectreH

If they came back after clearing, there is still a problem. Another way to clear is to disconnect the battery for a few minutes.

Nikusha Machavariani

Tried that too. Guess the part is no good.
Thinking about getting TB for 2006-2009 the non-heated one even though mine is 2005 and originally comes with the heated TB.
I've seen some reviews on how to bypass the TB and reroute the two hoses. Only 2005 has that and apparently because this was not necessary Ford stopped doing it starting from 2006.
Any thoughts on that?

Nikusha Machavariani

Also, could it be that only one of the two parts either TB or TPS is bad?

SpectreH

I don't have any experience with that, bit a quick Google search shows the bypass has been done like you said. https://mustangforums.com/forum/4-0l...nt-bypass.html