Problems With a Car Throttle

One of the more frequent problems with modern vehicles is a bad throttle position sensor (TPS). The tiny thing that keeps your car working, often falls prey to regular wear and tear, and therefore must be taken care of.

At first blush, a throttle seems so simple: the right pedal pulls on a cable that's connected to a shaft. This shaft rotates and opens a butterfly valve to let air into the engine. However, even the simplest symptoms can have binds and breakages, and the relentless march of technology has only created further opportunity for malfunction in this...

Learn the eight telltale symptoms of a defective throttle position sensor, and how to test it.

Learn about the most common causes of engine idle problems and how to determine their source.
Tags: Idle issues, idle problem, mixture issue, idle circuit, cleaning throttle body, vacuum leak idle problem, fuel injector problem, car sensor problem, mechanical issues with car, rough idle, engine mount

Mercury Grand Marquis Throttle Position Sensors May Fail and Cause Engine Performance Problems. This is a verified problem based on 30 reports. Learn more about this problem, when it occurs and how to fix it.