Tire size on stock changed before Gryphon

[Longshot270]

Originally Posted by dginter

well, truck died n just got towed of the expressway
i was getting on the expressway and accelerating and right bout 50 mph n lost all power, she dropped to about 800 rpm's, no response when pushing the accelerator pedal... pulled off the side and she was runnin' very rough like on 2 cylinders or somethin and shakin' a bit...
turned her off n now won't start.
you all think it could be something w/ the programmer? had it on level 2
did notice a lil extra tickin noise this morning but would go away w/ a rise on rpm's
placed it back to stock
hooked up to a snap on 2500 computer and shows no codes, says fuel pressure is 40 psi, removed plug and she has spark, the injector flashed
any ideas? i'm at a loss

Doesn't sound like the tune based on what happened. Too bad you didn't hook it up to the computer before reflashing back to stock. That wipes the memory.

The drop to 800 RPM while going 50 is strange. Limp home mode would have dropped it into 3rd gear if I'm not mistaken. Doing so would have kept the RPMs pretty high.

Have you checked all the fluid levels?

[Jackpine]

Originally Posted by Longshot270

Doesn't sound like the tune based on what happened. Too bad you didn't hook it up to the computer before reflashing back to stock. That wipes the memory.

The drop to 800 RPM while going 50 is strange. Limp home mode would have dropped it into 3rd gear if I'm not mistaken. Doing so would have kept the RPMs pretty high.

Have you checked all the fluid levels?

Yes, and limp home puts it on 4 cylinders, so it runs poorly, but it can be driven. I was not really too much in favor of calling it limp home.

The low rpms really just sound to me like fuel (or air) starvation, either would cut the other.

- Jack

[88Racing]

Originally Posted by Longshot270

Doesn't sound like the tune based on what happened. Too bad you didn't hook it up to the computer before reflashing back to stock. That wipes the memory.

The drop to 800 RPM while going 50 is strange. Limp home mode would have dropped it into 3rd gear if I'm not mistaken. Doing so would have kept the RPMs pretty high.

Have you checked all the fluid levels?

That sometimes use to happen with bills canned tow tune until he tweaked the torque management tables....but he can't do that to edges tunes.....

[dginter]

thanks evryone for the responses, haven't gotten to dig into it too far cause of work.
Have my buddy, the ford mechanic comin' over after work n gonna check it out, he's pretty good he won ford's troubleshooting competition about 3 years ago...
i have a gut feeling it has to do with the timing, somethin' along those lines...
will let y'all know what we come up with.... thanks again

[Longshot270]

Ok, post what the issue was when you find out.

[dginter]

sorry haven't gotten back in abit but been sick and my laptop crashed too... doin' this from my PS3,
my well, after acompression check with a ford computer, which is a comparative reading,
cyl 1 4% loss
cyl 2 21% loss
cyl 3 21% loss
cyl 4 has 20% loss
with the 5.4 being an interference engine, i'd think it skipped time n bent a few valves...
what do y'all think?

[dginter]

anyone know any options for anew engine?

[88Racing]

Originally Posted by dginter

anyone know any options for anew engine?

Long block
Short block
Modified
Performance
Stroker
Reman
Used



?????????????

[dginter]

thinkin long block, something performance if w/in reason
something that'll tie right in with the puter