Surging part-throttle

[orion_134]

My truck acts like I am blipping the gas when I'm driving about 15-20 mph with the pedal just past idle and it almost feels like I am randomly bobbing my foot. Does the 7.3 have some sort of throttle position sensor? What could it be? I just replaced the fuel filter.
Jesse

 

[J_F250]

The pedal maybe? It is electronic.

 

[roosterdiesel]

The pedal is the TPS as already stated, possibly could be that.

Sticking IPR could also cause that. Only way I know to diagnose with out R&Ring the IPR valve is a scan tool to see if the ICP is jumping up and down when the surging occurs.

 

[orion_134]

What and where is the IPR valve?
Jesse

 

[action4478]

What and where is the IPR valve?
Jesse

The IPR is on the back of the HPOP , down low , just left of center, It has a 2 wire plug on top & a 3/4 stamped sheetmetal nut on the end..

Get the truck hooked up to a scanner to read the EOT & monitor the ICP.. also make sure the oil is full....

 

[orion_134]

Hmm, the oil is actually about a quart over full, does that matter?
Jesse