Ok let me tell you guys what its doing and then what I have replaced.
Sometimes my truck will surge for no reason at low speed or take off. I can press the gas pedal (maybe 1/4 or less) and it will act like its gonna die, then surge a few times then all of the sudden it will take off.
I have replaced the TPS, IAC valve, O2's, Map sensor, crank sensor, coolant temp sensor, IAT sensor (think thats what it is called- air temp), removed and thoroughly cleaned the TB, new plugs, all new fluids in everything. I have not replaced the tranny fluid return filter inside the tranny pan, but will be doing so soon. I have put a pressure tester on the fuel rail and it seems to be holding pressure, I guess I could check it again.
Now comes the wierd part, when it acts up if I turn the truck off and then start it right back up, the problem goes away. I am fairly sure it's electrical, but what the heck could it be? Any help would be greatly appreciated.

 

My truck does this right after a rain, once, then it is fine until it rains again. Dunno what it is. Replacing the rotor and cap, and the plug wires helped a little.

 

He has a 4.7.... He doesn't have the cap and rotor or plug wires.

 

Yeah no cap or rotors, I have coil overs and they ohm'ed out ok. I have a friend (in Minnesota) who is a Dodge mechanic and he is not even sure what it could be. I am trying to get it diagnosed over the phone with him, but I might be doing something wrong or misunderstanding the process. I was hoping somebody else had been through this and could offer a potential fix, it's driving me crazy and hate taking my vehicles to a shop.

 

sure its not the transmission going into that limp mode thing?

 

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Appreciate the idea, I will try that. I have been replacing sensros because I have high miles, so it's not a big deal about buying them (was going to anyway). The way it runs is getting on my nerves though, hope your idea works.

 

I completely Agree with SPARTANENGINEER1701
KISS is a motto of mine.
Always start simple..... want to add to his ideas and ask
Is the CEL on?
Is Vehicle STOCK?? Anything NOT OEM?

EDIT IN
Some reason I cannot see the info when I am posting- this is your truck mods?
"CAI, Yokohama A/T-S, F.M., K&N, SuperChips"

 

No CEL, you can read my sig as far stock or not goes, nothing major, but I may take the tune off and see if it helps. I detuned once before, now that I think about it, and it didn't seem to help. Only things I could think of is week fuel pressure regulator, something electrical (so I replaced a couple sensors) or was wondering if the return filter for my tranny cooler was real dirty could it affect things at start up? I am about to pull my tranny to put a kit in it (because I am about to regear) and am going to replace return line filter then. Thanks for the brainstorming guys.

 

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