[99powestroke]

I have a 99 7.3 ext. cab long box. Problem I'm haveing with it right now is every time I get into the trouble hard it or even over 2,500 rpms acts like it's goin into a limp mode, shifting at lower rpms, won't go over 2,000 rpms and it's really slow! Change the cam sensor and the icp. Any other ideas? Has the diablo sport predator tuner on it. Use to have the banks six gun on it! When it's back to stock it doesn't go into a lack of power mode

 

[dwparker94]

I would check your fuel filters. Do you have in-line filters along your frame? The only reason I am asking is I just had a fuel filter get knocked out of place in my frame, and with the angle it was at, the pump pulled part of the filter over the outlet. That would starve the truck of fuel at higher rpm's when under load (driving conditions). It is always useful to check the small things like filters before you get too deep into troubleshooting, at least that is what I learned from experiance!