This is not something for a do-it-yourselfer to monkey with. It's the same system that put Toyota in the news. The throttle body is the least likely thing to cause a problem unless what you replaced also had the motor and position sensor on it. There will be a diagnostic fault code stored to indicate the problem. A scanner is needed to access that computer and to read the code(s). If a problem develops that leads to loss of control, you want the dealer and manufacturer to be parties to the lawsuit, not you.

Answered by caradiodoc (expert)
17,324 answers provided

You're likely having a problem with one of the dual TPS sensor incorporated into the electronic throttle body. When it has a problem with one, it defaults to half throttle. If it has a problem with both, it shuts off the throttle completely. Like Doc says, get a diagnostic done by a shop that has experience with "drive by wire" systems.

Answered by Wrenchtech (expert)
14,749 answers provided