Mitsubishi Repair Problems? Ask a Mechanic for Answers ASAP
Do you recall the exact code number that was set? There are codes for throttle position sensor that mean the pedal sensor and others that mean the actual throttle body (most common).
The body and censor is one part.. the whole thing has been replaced
So the throttle body assembly was replaced with a new unit? Again can you get the exact code numbers so I can get an idea of what the computer is seeing?
My concern with the code is there can be issues with the throttle sensor on the throttle body (like you replaced), with the pedal throttle sensor mounted behind the head light, or with the computer itself.... there isn't much else to the system except wiring, and the code will give us a better idea of what the computer is seeing as a problem.
This was a brand new throttle body that was installed or a used one?
Short of knowing the exact code that is set, you are pretty much going to be down to replacing the pedal sensor (APP) on the fender behind the head light and replacing the computer. Unless there is something going on with the wiring/fuses (rodent damage, water damage), those are the only other components that would cause a throttle related fault.