Hi all,
Been lurking on powerstroke.org for years, finally signed up as I've hit a dead end in my search to diagnose and repair my truck.
Ill start here:
Couple of weeks ago my girlfriend and I are headed up the hill the hike to Three Finger Jack. Steady incline all the way. Truck starts to vibrate pretty bad under acceleration (bucking?) It would get better or worse at times. I've had some slight vibration in the past under low end acceleration temporarily while driving. Mainly from a stop or before the transmission shifts while cruising up hill or at highway speeds. Rarely would happen and nothing like it was a couple of weeks ago. The truck never really stalled but did lose a lot of power. The only way I could keep the truck somewhat steady driving was to stay in TOW/HAUL. When I initially pulled off the highway, the engine sounded rough and had a low, heavy rolling idle. Same kind of idle when you start up on a cold day, but doesn't clear up.
Changed the fuel filters, oil, oil filters, coolant filters (5w-40 mobile 1, wix/motorcraft filters)
Pulled the turbo. Looked great with the exception of a little wear on the unison ring. Cleaned it up and replaced the unison ring.
Cleaned EBP sensor and tube.
Test ran it last night all back together. Symptoms have been mostly "reduced", if you will. Same problems just much more slight but enough to know something is wrong. Truck F****** climbed a very long hill behind my house with the turbo pushing my *** like it was nothing, but I could still feel a minute vibe and of course while idling at the top of the hill. Pretty much shakes the whole truck. Not violent.
FICM is testing 47.5v-48v through the key on, at idle, hot, cold, WOT (with multimeter and scangauge)
Truck never smokes with the exception of during some start-ups it'll blow out a small puff of white/bluish smoke while it fires up.
No CEL or codes showing on the Scangauge
Numbers from my Scangauge II:
Gauge / Idle / Acceleration-WOT
FLP (ficm logic) / 11.5v-12v / 13v-13.5v
FMP (ficm main) / 47.5v-48v / 47.5v-48v
VGT (duty cyc%) / 75-85 / up to 43-44
ICP (Pressure) / 770-780 / up to 3800 Idle for ICP would go down to 640 when warmed.
ICV (ICP volts) / .93v-1.07v / up to 3.9v
IPR (duty cyc%) / 27-31 / up to 76 Idle duty cycle would mellow out to 22-24 warmed.
EBP (PSI) / 17.4-18.8 / up to 47
MFD (mass fuel) / 14-15 / up to 57-65
MAP / 14.6-15 / up to 31-34
Do any of these stats stick out to you? I've bolded the ones that stick out to me based off of what I've read and researched off the web but am looking for someone to help confirm any suspicious gauge readings. What could my potential causes be for any odd readings?
You'll notice I've avoided using the word injector this whole time. After going through these procedures, I'm afraid I might be heading in the direction of a troubled injector. That said I know even a bad alternator can mess with you. Do you think the FICM could be testing/reading good for power but still wonky? Any other sensors I'm missing that I should be looking for? Are there any specific spots on the harnesses I should be looking for wear? Visually they look fine.
Maybe I have a sticking injector?
Not enough Fuel?
EGR is deleted but I checked the valve anyway and ran plugged/unplugged. Clean and no difference.
Injector buzz cycle sounds a little askew when the Key is on, definitely not as good as usual but not crazy.
Batteries died once while in the driveway but I have reason to believe they were on their way out (long story).
2005 F250 lariat CC 6.0L
- EGR delete (welded freeze plugs in cooler)
- Bulletproof oil cooler w/ thermostat
- Blue Spring
- Remote coolant filter
- New batteries
- Alternator less than a year old
This is the short list I can remember. When I did the oil cooler/egr delete I did a slug of other routine maintenance/replaced updated parts that a tech at ford discussed with me. I can't even remember all of it. Especially with all that I read on here to take care of too. HPOP was sitting on my dining room table for a day.
Any help would be much appreciated!!!
If I'm missing anything descriptive, my bad. Long post and I've started to go stir crazy typing on a computer for so long.
-Bill
Been lurking on powerstroke.org for years, finally signed up as I've hit a dead end in my search to diagnose and repair my truck.
Ill start here:
Couple of weeks ago my girlfriend and I are headed up the hill the hike to Three Finger Jack. Steady incline all the way. Truck starts to vibrate pretty bad under acceleration (bucking?) It would get better or worse at times. I've had some slight vibration in the past under low end acceleration temporarily while driving. Mainly from a stop or before the transmission shifts while cruising up hill or at highway speeds. Rarely would happen and nothing like it was a couple of weeks ago. The truck never really stalled but did lose a lot of power. The only way I could keep the truck somewhat steady driving was to stay in TOW/HAUL. When I initially pulled off the highway, the engine sounded rough and had a low, heavy rolling idle. Same kind of idle when you start up on a cold day, but doesn't clear up.
Changed the fuel filters, oil, oil filters, coolant filters (5w-40 mobile 1, wix/motorcraft filters)
Pulled the turbo. Looked great with the exception of a little wear on the unison ring. Cleaned it up and replaced the unison ring.
Cleaned EBP sensor and tube.
Test ran it last night all back together. Symptoms have been mostly "reduced", if you will. Same problems just much more slight but enough to know something is wrong. Truck F****** climbed a very long hill behind my house with the turbo pushing my *** like it was nothing, but I could still feel a minute vibe and of course while idling at the top of the hill. Pretty much shakes the whole truck. Not violent.
FICM is testing 47.5v-48v through the key on, at idle, hot, cold, WOT (with multimeter and scangauge)
Truck never smokes with the exception of during some start-ups it'll blow out a small puff of white/bluish smoke while it fires up.
No CEL or codes showing on the Scangauge
Numbers from my Scangauge II:
Gauge / Idle / Acceleration-WOT
FLP (ficm logic) / 11.5v-12v / 13v-13.5v
FMP (ficm main) / 47.5v-48v / 47.5v-48v
VGT (duty cyc%) / 75-85 / up to 43-44
ICP (Pressure) / 770-780 / up to 3800 Idle for ICP would go down to 640 when warmed.
ICV (ICP volts) / .93v-1.07v / up to 3.9v
IPR (duty cyc%) / 27-31 / up to 76 Idle duty cycle would mellow out to 22-24 warmed.
EBP (PSI) / 17.4-18.8 / up to 47
MFD (mass fuel) / 14-15 / up to 57-65
MAP / 14.6-15 / up to 31-34
Do any of these stats stick out to you? I've bolded the ones that stick out to me based off of what I've read and researched off the web but am looking for someone to help confirm any suspicious gauge readings. What could my potential causes be for any odd readings?
You'll notice I've avoided using the word injector this whole time. After going through these procedures, I'm afraid I might be heading in the direction of a troubled injector. That said I know even a bad alternator can mess with you. Do you think the FICM could be testing/reading good for power but still wonky? Any other sensors I'm missing that I should be looking for? Are there any specific spots on the harnesses I should be looking for wear? Visually they look fine.
Maybe I have a sticking injector?
Not enough Fuel?
EGR is deleted but I checked the valve anyway and ran plugged/unplugged. Clean and no difference.
Injector buzz cycle sounds a little askew when the Key is on, definitely not as good as usual but not crazy.
Batteries died once while in the driveway but I have reason to believe they were on their way out (long story).
2005 F250 lariat CC 6.0L
- EGR delete (welded freeze plugs in cooler)
- Bulletproof oil cooler w/ thermostat
- Blue Spring
- Remote coolant filter
- New batteries
- Alternator less than a year old
This is the short list I can remember. When I did the oil cooler/egr delete I did a slug of other routine maintenance/replaced updated parts that a tech at ford discussed with me. I can't even remember all of it. Especially with all that I read on here to take care of too. HPOP was sitting on my dining room table for a day.
Any help would be much appreciated!!!
If I'm missing anything descriptive, my bad. Long post and I've started to go stir crazy typing on a computer for so long.
-Bill