It is not necessary to replace the whole throttle body if the TPS is faulty.
You can test the TPS by the voltages present at fully closed and open throttle. 0.5 v and 4.5 v respectively.
If you replace it, you need to calibrate it to the above specs.
I would suggest putting the car on a diagnostic to see if all the components are working well. A faulty O2 sensor would also cause the problem that you described and it sometimes do not show on the CEL.
Friday, July 18th, 2008 AT 7:03 AM