[CoreySchoener]

Randomly while pulling and not pulling with this 6.4 liter i will loose all my power and looks like the turbo but i think its mostly due to me loosing power and most likely exhaust pressure. The truck has 143,000 miles on it with no aftermarket attachments. When this lose of power happens i have to pull over and turn off engine and restart. A few days ago even restarting the truck when i didnt have a trailer, didnt even fix it. I always have my oil changed every 5,000 and my fuel filters every 10,000 miles. My trailer i pull is about 8,000 pounds. I figure its prob the HPFP but wanted to get some feed back about it. Also i have been looking into EGR deletes and programers for the delete/ fuel milage, Any quality recommendations would be grately appreciated.

 

[Jburcham04]

I lost power before when my dpf stopped working, it was clogged and not letting any exhaust out in turn the turbos wouldn't spool, ended up blowing a hole in the side of the dpf... When you shut it off and start it back up does it go into Regen?

 

[senix]

This to me sounds more like it is limiting the power as in low on fuel or low pressure. I would almost bet there is a code that has been stored in there.

I would suggest an investment to get the code read.

 

[kric]

Same thing happened to me. Took it to get the code read and turned out a short in the high pressure pump. Lucky for me i was under 100000 miles barely. I do hope it is something cheaper for you

 

[CoreySchoener]

Well it seems to me i def should buy a code reader, any recommendations? The engine has 145,000 on it so out goes the warranty. But i have def considered a EGR and DPF removal. Im guessing it doesnt matter which blocker plates i go with but any one have real good mileage with a chip the goes with the EGR and DPF blocks?

 

[senix]

probably spartan for the tuner and dpf delete. EGR delete I don't know..but spartan can turn it off for you and then cycle it at idle.

 

[CoreySchoener]

Now i am unfamilar with the DPF, is that part of the exhaust? and is that what cleans the exhaust filter out?

 

[CoreySchoener]

Jburcham04, I have not noticed that it goes into regen(filter cleaning?). But i do notice that the truck will say its cleaning but i dont notice any power loss and smoke. But 10% of the time of cleaning it will smoke and lose power. It'll randomly clean after the motors warm prob every 150 for about 50 miles at a time. And it always goes into cleaning when i am 75 miles till Empty. Go figure dump fuel into the exhaust when i start looking for a diesal station. I do travel alot every week

 

[cdgriffin3]

Excuse me for being blunt but get rid of the 2008. It was a horrible year for Ford. You might just be spending too much $$$ on it. I had a 2008 for about a year and a half till I got fed up with it. They replaced the radiators, computer, torque converter and finally the motor. I had enough! Ford actually worked with me and put me in a 2010, which is the same motor but I haven't had a problem since. First thing I did do was remove the DPF and it helped! I hope everything works out and good luck!


Sent from my Autoguide iPad app

 

[senix]

Jburcham04, I have not noticed that it goes into regen(filter cleaning?). But i do notice that the truck will say its cleaning but i dont notice any power loss and smoke. But 10% of the time of cleaning it will smoke and lose power. It'll randomly clean after the motors warm prob every 150 for about 50 miles at a time. And it always goes into cleaning when i am 75 miles till Empty. Go figure dump fuel into the exhaust when i start looking for a diesal station. I do travel alot every week

the DPF is the diesel particulate filter. It is what traps the soot. A properly working system should be seamless to the driver. Aside from maybe a change in engine tone and a message display you should not have any smoking or driveability concerns. Regens according to your posting are a little too frequent but more info is needed to determine if that is truely the case.

Ford will say that regens should be anywhere from 100-600 miles apart depending upon duty cycle and of course the type of fuel.

 

[CoreySchoener]

So while cleaning the exhaust filter it should not blow white smoke? And pretty much a DPF delete is a new exhaust?

 

[senix]

So while cleaning the exhaust filter it should not blow white smoke? And pretty much a DPF delete is a new exhaust?

White smoke on a rare occasion with cold ambient temps is about it.

Not a complete exhaust for the dpf delete. Only that portion of the dpf and then a straight pipe installed.

 

[CoreySchoener]

Alright Guys, threw my first code P 0088. Fuel Rail/System Pressure Too High.

 

[CoreySchoener]

But im not running a programmer

 

[CoreySchoener]

I trying to get my Mechanic to take a look at it but of course when i take him out for a ride with the computer it doesnt back down on me.

 

[deliberate]

Not a complete exhaust for the dpf delete. Only that portion of the dpf and then a straight pipe installed.

If one removed their "good" DPF (just to be safe) and then got a used DPF someplace and hollowed it out but kept the sensor etc and installed that (would look stock!) -- would that work ... with it therefore NOT gathering soot and so never reaching back pressure to signal the system to start a regen?

I'm still on approx 200 mile regen cycles at 15k highway miles. I hate that damn thing.

TIA,
- Don

 

[senix]

No. Hollowing one out will not work. First the pcm will command a regen at the 630 mile mark. (don't quote the exact mark).

Secondly it will have a problem because the sensors fore and aft of the hollowed out DPF would not be getting proper readings of backpressure.

It would work for inspection purposes but you will still have to have a tuner to to care of the regens.

 

[alclerc]

Hello, I a new to the forum.

I am having the same problem with several of you here, with my stock 2008 F450. Have brought it in a couple of times. Dealership claimed they had a code that the EGR was bad, so it was replaced. Specifically, the mechanic wrote, "performed pin point test and found EGR valve in position out of spec. Replaced and road test no check engine light on."

However, next day nothing changed. Needed my truck so I drove it around around for another three weeks and the truck still continues to OCCASIONALLY go into a lower power mode and cruise shuts off. The check engine light did not come on until a week ago. I never saw "the wrench."

Brought it in again yesterday at the end of the day and they said they "got a few codes," including something about the throttle, and will call me after the weekend with more information. However, I am very cynical that they know what the issue is (after spending over $1,000 on the EGR replacement last time…partly due to “needing to remove air intake elbow and EGR base due to valve being seized in the intake elbow”…. another story). One other thing: Recently, as I pull my heavy trailer up steep hills, my trucks occasionally overheats (in cool weather even) and goes into a safety mode (cruise shuts off again). It never used to do this.

I did notice that the cleaning exhaust filter comes on quite often. A review of my maintenance records show that I am on top of everything, including fuel filter.

I would appreciate any help.

 

[ashford39439]

I had the same thing happening with my rig this summer, exactly same symptoms, and same procedure to correct it. I did a bunch of different things that only took nabout 45 mins to do and one of them fixed the issue because it hasn't done it again. This is what I did:

- Unplug turbo actuator clean connection
- Unplug and clean EBP sensor and tube
- Unplug and clean connection for fuel rail sensor
- Unplug and clean connection for HPFP

I am by no means a mechanic but doing this seems to have resolved my issue... maybe it will help you.

 

[mcochran2203]

If I do a DPF delete, do I need a tuner?