The vehicle speed sensor (VSS) or output transmission speed sensor determines how fast your vehicle is going by measuring the rotation of a toothed wheel on a shaft inside the transmission or at one of the wheels if the signal is coming from the ABS module to the PCM or TCM. The speed sensor can produce analog waveform signals or square wave

Solution: The throttle control system controls the air-fuel mixture that your engine burns. If it starts sending the wrong signals, it can inject way more fuel than is needed. The associated trouble code should identify a problem with the throttle controller, which can then be repaired.
Poor fuel economy. Problems during gear shifting. Electrical system malfunctioning. Poor idling. Limp mode. In this article, I’ll explore 13 symptoms of a bad throttle position sensor on a Jeep and discuss replacement options and costs. So buckle up, and let’s dive into the world of Jeep throttle position sensors. See also P0122 Code: Throttle Position Sensor/Switch A Circuit Low Input Safety Reminder About Handling the Throttle Body Please note that although the throttle body has an internal spring designed to close the throttle plate for safety, while the PCM is engaged, the throttle motor drives the throttle blade open and closed, so never put your Jeep Grand Cherokee TPS sensor replacement copy and paste for great deals parts
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7,060 Posts. #4 · Jan 5, 2017. That same harness to the crank is the harness that has the battery, alt, battery temp sensor and a few ground connections at the lower, passenger side of the block. If you can, get a new harness before getting a new sensor so you eliminate the chance of a grounding out connection to that sensor. 1. Throttle body for 4.0 does not seat correctly causing major vacuum leak. 2. IAC valve does not match or also does not seat. I know that it revs high but start it and have a buddy spray carb cleaner around the throttl body (not in the throttle opening) and see if it drops quickly.
Later EGR valves use small electric motors internal to the valve and a three-wire feedback sensor to report EGR pintle position. Pro Tips are nuggets of information direct from ASE-certified automobile technicians working with CarParts.com, which may include unique, personal insights based on their years of experience working in the automotive
53 posts · Joined 2007. #1 · Jul 20, 2007. I have had issues with my truck since I bought it last week . Sometimes when accelerating under normal throttle and gear shifts to 2nd gear I get no acceleration, basically I give it throttle and nothing happens. So I took it to the dealership yesterday and they "think" its the throttle position UVFWJ5.
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