Archived Rpm problem

[JWomack]

I was wondering if someone could help me out. I put a 2002 24v in a 92 f250 and the motor is acting funny. I was told it did the same thing in the dodge and it didnt have any codes. The lp/vp are both new and the problem still exist. The only thing I havent changed is the apps. I have put a good one on it but same results. The only problem is they were for automatics and the truck is now a nv5600. If anyone has any ideas please help. The problem does get worse with a stage3 preadtor box on it. But the performance does not change. The tach is not hooked up yet but seems to be on the low side 2400 rpm is all it acts like. I did not use any of the dodge pcm parts. Iam installing abig fuel kit on it now and will see if it helps.

 

[R-N-R]

Can you describe "acting funny"?

 

[JWomack]

If you put the pedal to the floor it will not do anything the second half of the throw. It stops there and wont continue past that rpm. The motor stops pulling half way through the throttle range. It acts like the apps is bad but I didnt know for sure if it was an auto apps if it would work on a now manual motor. Since I didnt use any dodge pcm stuff I didnt know if the apps needed a signal from the pcm being it was an auto truck.

 

[Extreme1]

Do you have good fuel pressure to the VP?

 

[JWomack]

Yes 10psi @ idle and 9psi @ wot. Took it in to cummins today and they said they dont know why?