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.
Peterbilt throttle position sensor problems.
Truck is a 2005 peterbilt 379 with c15.
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.
Yes go to 2c no go to 3a step 2c turn keyswitch off and disconnect the accelerator pedal position sensor from the oem harness.
2015 peterbilt throttle loss.
Rjpierma24 location offline senior member reputation.
This sensor can fail gradually or all at once.
Going to trace wires in morning and check resistivity in new tps.
Replaced throttle position sensor on 09 peterbuilt and am getting same problem.
Sensor shows good on scanner seems to act up driving answered by a verified technician we use cookies to give you the best possible experience on our website.
Driving the truck today and lost throttle and check engine light came on.
Answered by a verified technician we use cookies to give you the best possible experience on our website.
09 peterbuilt 389 with cummins isx.
Check engine light went off but still no throttle.
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.
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.
Accelerator pedal position sensor 5 volt supply pin to the accelerator pedal position sensor return pin at the sensor connector of the oem harness.
It can also cause problems when changing gears or setting base ignition timing.
Replaced throttle position sensor on foot petal.
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.
Turn key switch on and connect diagnostic tool.
Can control engine rpms with cruise control still.
2009 peterbilt isx cummins code1241 throttle postion problem.
The days of having to constantly adjust the throttle cable due to a loose nut on the carburetor are long gone.
When you have a problem like this the first thing you need to do is check the throttle positioning sensor.
