There is no external TPS sensor on the gas pedal itself for the hemis. The TPS is built into the throttle body component itself. You can calibrate the TB though through the steps I posted earlier. You do however have a cable that runs from your gas pedal back to the APP sensor which is under your battery tray. APP sensor = Accelerator Pedal Position sensor which tells the PCM what angle the accelerator pedal is at and then the PCM tells the throttle body to posistion the throttle plate accordingly. Adjustable pedals also tend to have the APPS right on the pedal. I doubt the APPS is the problem but if you take the truck in, make sure they check it if a new MAP sensor doesnt work.
Here's some info on the MAP sensor. Once I get outside I can take a better picture for you if you need it.
5.7L V-8
The Manifold Absolute Pressure (MAP) sensor is
mounted to the front of the intake manifold air plenum
box (Fig. 24).
Rotate sensor 1/4 turn counter-clockwise for
removal.
Rotate sensor 1/4 turn clockwise for installation.
And like OSO said, you can try the key trick to find a code. Sometimes it will store codes and not actually display the light. The key trick wont work on all 04s, like mine, but it does on the newer 04s.
Here's some info on the MAP sensor. Once I get outside I can take a better picture for you if you need it.
5.7L V-8
The Manifold Absolute Pressure (MAP) sensor is
mounted to the front of the intake manifold air plenum
box (Fig. 24).
Rotate sensor 1/4 turn counter-clockwise for
removal.
Rotate sensor 1/4 turn clockwise for installation.
And like OSO said, you can try the key trick to find a code. Sometimes it will store codes and not actually display the light. The key trick wont work on all 04s, like mine, but it does on the newer 04s.
Last edited:
