Compression Ignition Addict
Join Date: Sep 2012
Location: Knoxville TN
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04 F250, Low power, LOUD fuel pump whine, wont rev
long story short, i drove the truck to the gas station monday morning to get gas for the lawn mower, everything was fine.
headed to work that night after stopping at the gas station (i leave it running when i go in, its barely a minute from my house). went to pull out in the road and ran it a little harder than normal driving (not wide open, but enough that it will shift at 3,000rpms.) when it hit about 3000, it stopped like i was holding the brake and throttle at the same time. i let off and it shifted, then i rolled into it again. this time 2500rpms and it stops there. wouldnt go any higher. drove to work (interstate) and cruised just fine at 65. got off the interstate and put it to the floor. boost spiked around normal (20ish psi) and then it hit the wall again, 3000rpms, with boost dropping to 13-14psi.
SCT said ICP was fluctuating between 580-590 at idle, with a spike in the high 3000psi range before it hit the 3000RPM mark, and the ICP reading would slowly decrease with the RPMS, not like an immediate drop. i stopped at a redlight and hit wide open throttle from a standstill. ICP spiked around 4100PSI (Livewire keeps highest reading listed until that is surpassed by a higher reading) and stayed in the high 3000's, but as soon as it hit 2500RPM's it stopped accelerating and bogged down. fuel pump under the cab seems unusually loud, but ive also been wondering if the ICP sensor isnt going in the crapper.
XDP EGR Delete with EGR valve blockoff plate.
4in straight pipe
SCT Livewire w/ 65hp tow tune
BPD oil cooler relocation kit
Rotella T6 5W-40 (about 3K miles on this oil change, still looks clean as the day i changed it)
FICM replaced late December 2012
just changed fuel filters about 300 miles ago.
forgot to add that during this WOT and no power, the transmission WILL NOT shift until i let off. limp mode? no codes/check engine light present.
-Tyler- -Navistar Technician-
2004 F250 CCSB FX4 6.0 - XDP EGR delete, BPD Oil Cooler Relocation, SCT Livewire TS, 315/75/16 Falken Wildpeak A/T's, Rough Country 4in, stock DP with 4in straight pipe.
Last edited by Int.Tech04; 04-11-2013 at 06:06 AM.