loss of power

[F-450 7.3]

I have a 99 ford 7.3. The truck starts and hesitates to rev up. Once you get it to about 3000 rpm the truck is fine and then looses power and slows to about 2500 rpm and then goes back up to 3000 on its own. What are some possibilities the problem could be.

 

[Frankenstien]

My first thoughts are Fuel starvation... do you notice any changes in sound?.... exhaust color... do you have gauges?... EGT change?....

 

[F-450 7.3]

is it possible for it to be a bad fuel pump

 

[95_stroker]

Fuel pump is a distinct possiblity. When was the last oil/filter and fuel filter service done?

 

[F-450 7.3]

the oil and filters had been changed about 1200 miles ago. but i think i found the problem it is the harness that connects to the injector harness under the valve cover. it was loose plugged it in a little more and seems the problem has fixed. will test it a little more tommorrow.