Engine/Transmission (1994 - 1998) P pump is sticking

[JDKammin]

I have been using my 96 to pull the water wagon today. My pump has been hanging up and RPMS will stay at what I had the throttle pedal position at, when going down the road. The only way I can get the RPMS to come back down, is to tap the throttle hard. If I do not do that and push the clutch down, the RPMS will be at 2000-3000 RPMS. I sprayed penetrating oil on all of the throttle linkages and pivot points. I unhooked the throttle and cruise control cables and moved the pump linkage by hand. The pump will hang up and I will have to push the arm in order for the engine to idle. Does this sound like a plunger hanging up or something else?

 

[hsmith]

Are your return springs in place???

 

[Missouri Mule]

I 'll have to go with hsmith return springs? Could be governor springs, doubt plungers would cause your problem.

 

[JDKammin]

I checked my return springs and they are all on. I thought about replacing them, but I can feel something catching with the engine running, when I move the pump arm by hand. I also installed 3000 rpm govenor springs about 2 1/2 years ago. Time for my pump to get sent to Columbus Diesel??