dead pedal, surges, engine revs tachs up when not on pedal, temp and oil pressure gauges are all over the place. Codes this time are...
P-0393
P-0606
P-1286
P-1475
P-0563
P-0113
P-0123

it will run fine for about 10 miles before it gets 8 kinds of stoopid. Let it sit overnight and I get 10 more good miles out of it. Any way to test the ECM off the truck to be sure that's what it is before I drop a grand on it?

Thanks fellas

 

Mods? Fuel Pressure?
How are your grounds?
Performance issues?

 

Check your grounds good, also, if you are running a box or programer, get it off the truck, then see if it still does it. Sometimes when boxes go bad, they'll do stuff like that

 

mods are...
2001 3500 4x4 5spd qdcb, head studded and o-ringed, 120hp injectors, 64mm turbo, raptor 100 lift pump hot rod vp44, edge drag comp with hot unlock

I pulled the box and it didn't make a difference

 

606= ecm death code.

 

Is there anything else that would cause a 606? Bad sensor somewhere backfeeding? bad ground? short somewhere? I'll do an ecm if that's what it is, I just don't want to throw that much money at it if there might be another cause

thanks