Hmmm... I wonder if the APPS effect a Auto the same as a manual transmission... I tried resetting my APPS, and cleaning my ground wires (read somewhere that could cause this) and it's still surging... it seems to be getting worse. Ideas?

 

Start with the basics, fuel filter and test fuel pressure. Mine did this same thing for a long time then i replaced a "good" aftermarket APPS from carquest and replaced with direct cummins part. This fixed my surge.

 

Well... I figured it out... Someone before me put an inline fuel filter on the hard line between tank and engine, just a 3/8" inline filter. I replaced that and it runs better than it ever has (Since I've owned it, only a month or so)
I was really starting to get worried, I went to town twice this weekend (30 mile round trip) and wasn't sure I was gonna make it back, my pick up was bucking and snorting and coughing up smoke and not throwing any error codes...

Anyway, thank you to all who helped out!

Now on to some mods...

I think the next thing is air filter, the previous owner put on a Spectra filter and just sat it in the bottom half of the stock air box, so I need to fix that, probably BHAF is what I'm thinking, i'll need to do some looking to see what the best option for air box with the BHAF is...
Anyway, Thanks again!!!