6.4L Power Stroke Engine and DrivetrainDiscussion of the 6.4L Power Stroke diesel engine and drivetrain in the 2008 Super-Duty trucks. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 6.4L Power Stroke engine.
'08 6.4 slows to 45 climbing up 6% slopes. I think it's computer related as it will just sit at 2600 RPM with 25 lbs of boost. After a while it shifts down producing 3000 RPM but the boost goes down to 20 PSI so it still won't accelerate. On less incline it produces up to 32 PSI.
what kinda weight you pulling? if your at about max gross and pullin sunset point on 17 i can see those numbers as being about right.....32lbs boost...you have an added boost guage?
I'm pulling around 14,000. Boost is only putting out 20-25 lbs when it is going slow.
I'll take it in to Earnhardt soon. If they can't diagnose it they will put a flight recorder on it to see what is going on. It used to pull that load at 55+MPH on the same grades.
My buddy in a 24' motorhome with a V10 towing 1500 lbs can pass me.....
Well, it appears Ford agrees. They are changing one of the turbos. Of course the body has to come off so I won't see it 'till next week.
It's tough fitting tools in a rental car! I need to haul some doors and cabinets etc. so I'm not enthused about the gas money saved driving a little cage.
You have to pull the body off to change a turbo on these?
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2004 6.uh0 F350 FX4 DRW
101,000 and counting
5" strait pipe exhaust with a 6" chrome tip
Got my tunes!!! 800 watts pushing Boston Acoustics 5 x 7's and 1000 watts pushing 2 Pioneer shallow mount 10's
Viper alarm with remote start and pager
Other than that, she's pretty much stock!
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1997 F350 ROLL A LONG 4x4 213,000
4" lift, 35" Yokohama Geolanders M/T
4" Exhaust, K&N, Edge Evolution, Tri-pod gauges
Hughes Performance Tranny / Billet converter
NOW DEAD & BURIED, Truck stolen, stripped, recovered, Total because the IDIOTS put GAS in it!
fords latest reflash took my truck from 42 psi to youre 28psi and claims to help mpg what a joke ford has reuined the 6.4 powerhouse,and won`t even talk about it maybe someone should sue for breech of contract...not the lemon law..
Yep, body has to come off. At least we don't have to do that to change the batteries! Real curious to see how they handle the Transferflow wiring.
I haven't been without a pickup in many years and am really suffering withdrawal. I have so many loads to move I'll be busier than a one armed wallpaper hanger.
fords latest reflash took my truck from 42 psi to youre 28psi and claims to help mpg what a joke ford has reuined the 6.4 powerhouse,and won`t even talk about it maybe someone should sue for breech of contract...not the lemon law..
That doesn't sound right...i was able to hit over 30psi while in regen mode...35 any other time if i wanted too.
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91 4runner. 1 ton locked and 40's
2008 F350 SD FX4
6.4TT
20" Jessie James 1 off rims
35" rubber
4" procomp lift
Got it back, turbo pressures are higher than since new so hopefully it does a better job. I won't know for a few weeks as I won't be pulling in the mountains.
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