Surging 97 powerstroke

[glovemeister]

Hey guys,

I was just driving to my buddies house which is about a 10 mile drive. I was coming up a pretty good hill and the truck started surging roughly around 55-70. Essentially I could hear it change in rpm as well as feel it. It seemed like it wasn't getting enough fuel. It has done this before on a 180 mi trip, but only for a little bit. This time it was more pronounced. The CPS was replaced with a Ford one just a bit ago. I can't tell if its throwing a CEL because my ebpv is disconnected so cel is always on.Also have no scanner. FPR has also been cleaned, maybe have to do it again, but I wouldn't think so because I just did it like 1 month ago. My thoughts are TPS, APS, or my hpop is failing.

[Stroker210]

Is it just doing it on the hill or after it started it just kept surging?

[glovemeister]

Well prior to this it has happened twice that I know for sure. The first time was the same speed range and coming up the canyon, which isn't a serious hill but it was a bit of an incline (mostly flat though). The second time was on the interstate and doing the same speed range on a hill, and it happened and then quit. Today I was climbing a hill and it was the worst it has ever been I could hear it happening (in terms of fuel charge and cut out). I could perhaps have heard it this time because I had music and heat off.

On the way home I climbed the same hill (opposite direction which is far steeper and had no problems).

[72Ford250]

Bump and I also have the same problem but not to serve just did it climbing a steep hill from a dead stop and with the chip on 65 hp performance and it happen in the fourth gear at about 2000 2500 rpm I wonder if that is the hpop not pumping enough oil to the injectors Like starving them of oil


Sent from my Autoguide iPhone app

[glovemeister]

I'm not real sure what to check.I guess I could do an HPOP test, outside of that APS (which I can't replace unless I can junkyard another pedal) or tps. I am out of ideas. It doesn't do it very often which is just damn weird. Essentially I can drive the same hill another day and have no issues. Just drove that same hill 2 or 3 times today.

[glovemeister]

Issue returned the other day for about a solid minute.

I checked HPOP and no low issue. I wish I had paid more attention to the gauge location as it might have been towards the low end each time and thus was sucking dirt up or something. I ran heet in both tanks today. Today it was fine no issues.