Peterbilt Throttle Position Sensor Problems

Today s modern cars trucks and suvs are all equipped with an electronic throttle control system that contains an accelerator pedal position app sensor this sensor s primary job is to monitor the position of the throttle pedal and send an electronic signal to open the throttle body.

Peterbilt throttle position sensor problems. Replaced throttle position sensor on 09 peterbuilt and am getting same problem. Rjpierma24 location offline senior member reputation. This sensor can fail gradually or all at once. The throttle position sensor is an electronic device that monitors the position of the throttle which directly relates to how far down you have pushed your gas pedal.

2009 peterbilt isx cummins code1241 throttle postion problem. Yes go to 2c no go to 3a step 2c turn keyswitch off and disconnect the accelerator pedal position sensor from the oem harness. When the throttle was put to the floor then released the throttle would go dead for a few seconds and the truck would lose power. 4 75 to 5 25 vdc.

Also often drivers confuse throttle issues with loss of speed vss sensor los off vss speed limiter rpm setting max speed limit and a bad ring gear for example can make the truck do some of the strangest things u can imagine from temporally loss of. 2015 peterbilt throttle loss. Driving the truck today and lost throttle and check engine light came on. It can also cause problems when changing gears or setting base ignition timing.

Turn key switch on and connect diagnostic tool. Accelerator pedal position sensor 5 volt supply pin to the accelerator pedal position sensor return pin at the sensor connector of the oem harness. The throttle position sensor can fail in several ways all of which result in poor fuel economy at best and performance limitations that may create a safety hazard for you and other motorists at worst. Check engine light went off but still no throttle.

The days of having to constantly adjust the throttle cable due to a loose nut on the carburetor are long gone. Can control engine rpms with cruise control still. Going to trace wires in morning and check resistivity in new tps. 09 peterbuilt 389 with cummins isx.

Truck is a 2005 peterbilt 379 with c15. Answered by a verified technician we use cookies to give you the best possible experience on our website. This regulates the amount of air entering the engine which much then be matched by an appropriate computer provided amount of fuel to mix with the air. Replaced throttle position sensor on foot petal.