[tommychau]

Mabe a Throttle position sensor malfunction? My engine would surge periodically from 100-200 rpms and back again when in cruise control. Also, I feel there is no power on the low end initial take off either until the engine hits 3000 rpm's and then it takes off. After reading some posts on engine surges, some people recommended a throttle position sensor replacment. I went to NAPA auto parts and bought a $37 throttle position sensor and replaced it myself and both of those problems went away. The nice thing is the sensor looked almost exactly the same as the OEM sensor. Right down to the part number. Easy to replace. unplug electrical harness and there is just 2 #20 or #25 hex screws to take out and that's it. 5 minute job.

Also, I never received any check engine light and the dealership could not find any error codes from the computer on the throttle position sensor failure either.