question on 7.3 running sluggish

[rebcwby]

I have a 2000 F350 7.3....truck started acting up tuesday night on way home..ses light came on, ran very rough--about 45-50 mph top speed, shifted very hard into gears....took to dealer wed morning---of course they said MONEY,MONEY,MONEY---need 3 injectors, wiring harness and idm module...anyways picked truck up took someplace else...they did buzz test..FINE....checked harness's...FINE....said bad battery pass side...have to admit runs better...ses light not on but still not totally fixed...idle's fine, drives good(up to 75+ mph) BUT when you punch it to floor....ses light comes back on and starts running bad again, kill it, re-start light off and will run fine again until you floor it, either at takeoff or going down road....have changed fuel filter,added injector cleaner from auto part store and friend had extra idm module put that in but did not help and still same thing...changed cps about 1 1/2 month ago...kinda almost like bad diesel or fuel pump-->>Maybe??? sorry for so long but.....any suggestions...????

[pipelayerjdh]

Have you checked the fuel pressure? It may have a weak fuel pump or blockage in the fuel lines.

[pipelayerjdh]

Oh, Welcome to the ORG.!

[SMKSTAX]

Were any codes pulled or is there any now?

[rebcwby]

orginally codes were--603, and #2 0264 and # 3 1296 but i think dealer might of got more or was just trying to screw me when they said 3 injectors and all the other stuff....have not checked this go around friend with reader is at deer lease...whenever he is back--hopefully this evening i will get his reader....also forgot to mention have superchip micro tuner on<<----old style does not read codes...thanks for the replies

[SMKSTAX]

Has it gotten a lot colder where you are?

[rebcwby]

HAHA....not in texas....haha....around high 70's...wishful thinking though...lol....did notice when i changed fuel filter there was a little fuel in the valley....cap was a little loose, thought maybe that's where fuel came from so made sure and double checked that it was tight when i changed this time..by the way smkstax....GO BOYS !!!!! YEAH

[SMKSTAX]

Gotcha. Hmmmmm just trying to narrow down your problem.

[rebcwby]

Oh i know...and thanks for the help....just doesn't get that cold here in east texas..not yet anyways...maybe jan-feb...but still then low in the upper 20's high's in 50's-60's...right now low's 40's - 50's and highs in upper 60's -70's...have not checked fuel pressure yet...had daughters bday today and had to cut short working on truck...suppose to be off work tuesday and have (hopefully) all day to work on truck if need be

[bmiller2000]

what were you thinking about the cold weather? Curious, kinda have same problem but no codes yet.