2002 Ford Thunderbird Q&A
2002 Ford Thunderbird Question: On occasion, when coming to a stop, with my foot on the brake, the car surges.
Try and disconnect the vacuum hose to the brake booster, and plug it so no vacuum leaks, then try it. If you try to drive it at this point, your brake pedal will be very hard to push while braking, Use caution, sounds like you shouldn't have to drive it to find your answer. Post results. - ProfessorG
Have replaced a TON of throttle position sensors for this EXACT issue.the sensor will get a bad spot in it and tell the pcm a higher voltage than what it should.Most of the time it will not set a code,this is an "in spec failure" - bmdouble