2001 Xj with i6 auto
odb says my code is P0122
“throttle position sensor A circuit low input.”
BUT I replaced the tps and the iac a month ago and have reset the check engine indicator several times, but it keeps coming back when I accelerate heavily.
Today, I cleaned the carbon out of the throttle body....now all nice and shiny. Reset the code....drove for 5 minutes. Check engine came back on under heavy acceleration.

in addition to the tps and iac, I also replaced the injectors, coil-pack, plugs, and thermostat. I doubt any of that is related, but figured I’d mention it.

anybody have any thoughts?

thanks.

 

try testing the TPS voltages, as per Youtube, FSM, Google etc

what make of TPS did you use...consider it could be faulty from the box, if not a quality brand

 

Word of experience; Mopar works best for ALL sensors! You pay more, but can expect them to last longer than any other.