Your multimeter, if all is OK with the TPS, should register 0.5 to 0.7 Volts DC. 3) Start the engine again and let it idle in park for 3 minutes one more time.

Cool Automotive Products and Tool Recommendations, Read AUTO REPAIR ARTICLES sorted by topic, Custom Wordpress Website created by Wizzy Wig Web Design, Minneapolis MN. Replacing the sensor is essential for good performance. If the buildup occurs gradually, the PCM “learns” the new home position. GM Mechanic: Dave Nova, GMC Technician replied 9 years ago. Then repeat step #3 one last time. Dave Nova, GMC Technician. Do not turn off the engine or disconnect the scan tool during this procedure. This picture shows a typical carburetor with throttle cable (upper cable) and transmission TV cable (lower cable). Plug in the sensor connector and clip wire-piercing probes on the center and left wire. Unplug the throttle sensor by lifting up the plug clip and pulling directly back on the connector. this voltage comes from the PCM (Powertrain Control Module=Fuel Injection Computer). Resetting The Throttle Body Calibration (this step is conditional) A Rough Idle or a SES can sometimes be caused by a change in the throttle body position sensor calibration.

In some circumstances, a low engine idle speed will prevent the transmission pump from developing full line pressure during calibration. It will eventually learn it on its own, but it may take over a week of driving, during which time you will experience high and low idle speeds and possibly rough idle. Calibration Procedure .

You should not attempt the throttle sensor calibration unless you are thoroughly familiar working around engines. In order to calibrate the throttle position sensor, the TV cable must be moved through its entire range with the engine running. A motor and gear reduction set inside the throttle body opens and closes the throttle plate to accomplish your request. Show Less. It bolts over the throttle plate shaft and has three wires connected with a snap-in plug. have replace the unit, but truck is idling high.

That saves a lot of time because you don’t have to refer back to the component locator or circuit locations. This port is situated underneath the dashboard on the driver's side of the vehicle, to the right of the steering column. Just opposite the throttle lever, on the opposite side of the throttle body, the throttle position sensor is located. If you’ve replaced your GM electronic throttle body or you’ve disconnected the battery, you must do a GM throttle body relearn to establish a new baseline idle. 2) After 3 minutes, turn the engine off and leave it off for 60- seconds. As the throttle moves, a voltage signal ranging from 0.5 volts to 5.0 volts is sent to the engine computer. Power on the scan tool and select "PCM" from the main welcome menu. Allow the scan tool to perform the CKP Variation learn procedure. Of all the sensors on the engine, the throttle position sensor is the only one that communicates driver input to the computer.

The proper procedure for resyncing or relearning the crankshaft position is called the "CKP Variation Learn." Code errors can cause your throttle … The pedal simply provides an electronic signal, telling the throttle body how much acceleration you’re requesting. The throttle position sensor calibration process measures the lowest and highest line pressures as the TV cable is moved, and internally associates those pressures with the 0% and 100% throttle positions. [])), +((!+[]+(!![])+!![]+!![]+!![]+!![]+!![]+!![]+[])+(!+[]+(!![])+!![]+!![]+!![])+(!+[]+(!![])+!![]+!![]+!![]+!![]+!![]+!![])+(!+[]+(!![])+!![]+!![]+!![])+(!+[]+(!![])+!![]+!![]+!![]+!![]+!![]+!![]+!![])+(!+[]+(!![])+!![]+!![]+!![]+!![]+!![]+!![]+!![])+(!+[]+(!![])+!![]+!![]+!![])+(!+[]-(!![]))+(!+[]+(!![])+!![]))/+((!+[]+(!![])+!![]+!![]+!![]+!![]+!![]+!![]+[])+(!+[]+(!![])+!![]+!![]+!![]+!![]+!![]+!![])+(!+[]+(!![])-[])+(!+[]+(!![])+!![]+!![]+!![]+!![]+!![]+!![]+!![])+(+!![])+(!+[]+(!![])+!![])+(!+[]+(!![])+!![])+(!+[]+(!![])+!![]+!![]+!![]+!![]+!![]+!![])+(!+[]+(!![])+!![]+!![]+!![]+!![]+!!