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6.4L Power Stroke Diesel Engine fitted to 2008 - 2010 F250, F350 and F450 pickup trucks and F350 + Cab Chassis SPONSORED BY:

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  #1  
Old 07-27-2014, 05:04 PM
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P0088 Continued

My truck was throwing the P0088 code. I'm taking it into Local diesel shop tomorrow there going to diagnosis to see if the pump is really failing. If I end up having to change the pump i'm thinking of having them do the repair cab off. While cab is off having the egr and coolers delete also putting headstuds in. Just wanting opinions on any other suggestions to do while cab is off. Want to bulletproof the engine as much as possible without spending crazy money. Also is there any real benefits to putting in an aftermarket hpfp over stock? I'll keep this updated as I found out what's going on.
Thanks in advance
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Old 07-27-2014, 07:46 PM
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don't think there is any aftermarket hpfp out there except for racing.

they may not want to do the EGR cooler delete.
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Old 07-27-2014, 08:48 PM
deerefarmer2 deerefarmer2 is offline
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Mine did the same thing, they have an update that will fix it, the diesel tech at ford plugged his laptop in, downloaded the update and everything has been good ever since. Mine had the same code, fuel pressure too high. I would try this first.
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Old 07-27-2014, 09:03 PM
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Quote:
Originally Posted by deerefarmer2 View Post
Mine did the same thing, they have an update that will fix it, the diesel tech at ford plugged his laptop in, downloaded the update and everything has been good ever since. Mine had the same code, fuel pressure too high. I would try this first.
Yeah i'm sure that'll be the first thing. Was your truck hesitating and falling on it's face when accelerating?
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Old 07-27-2014, 11:29 PM
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yeah, and it would get a fish bite or a bad miss in it at times too
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Old 07-28-2014, 05:08 AM
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Mine was only when towing and pulling hard. They do the reflash as first and see if that is the cure.

Mine went along time on the reflash but when traveling last summer outside of Midland Texas she acted up again. So had the HPFP replaced.

My Best guess is not the pump itself is having an issue it is the VCV. But this is a once unit so it has to all be replaced. If it was just the HPFP then there would be metal shavings going on and there isn't.
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2013 40' 4-slider stoneridge 5th wheel coming in at 15,400
http://www.ford-trucks.com/guidelines.html

Previous Truck 2008 F250 6.4 with lots of upgrades and a suspension upgrade from Torklift International StableLoads
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Old 07-31-2014, 08:57 PM
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Ok update. Truck has been in shop since monday. After some tests they can't really confirm it's the hpfp. They want to try the flash and add 2 cycle oil to fuel. They did discover today that there is an injector acting up said it was off balance on the low pressure side?? Didn't really understand I guess. Bottom line he said it could use an injector. My first thought was did hpfp send shavings to injector hence the injector problem. I asked if he'd pulled the fuel filter and looked in the bowl. I didn't have a chance before dropping it at shop, busy with work. He hadn't yet so i asked him to check that first for glitter or what not. Figured it'd be better to check that before screwing with the flash. I kinda feel like the flash is a band aide to cut down on warranty hpfp issues "just my opinion" Sorry for long post been busy all week.
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Old 07-31-2014, 09:31 PM
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Originally Posted by dman255 View Post
Ok update. Truck has been in shop since monday. After some tests they can't really confirm it's the hpfp. They want to try the flash and add 2 cycle oil to fuel. They did discover today that there is an injector acting up said it was off balance on the low pressure side?? Didn't really understand I guess. Bottom line he said it could use an injector. My first thought was did hpfp send shavings to injector hence the injector problem. I asked if he'd pulled the fuel filter and looked in the bowl. I didn't have a chance before dropping it at shop, busy with work. He hadn't yet so i asked him to check that first for glitter or what not. Figured it'd be better to check that before screwing with the flash. I kinda feel like the flash is a band aide to cut down on warranty hpfp issues "just my opinion" Sorry for long post been busy all week.
Dman you can't use the shavings you see inside filter housing as you will always have metal shavings due to fuel cooler machine process ford will not let us determine failure by just looking at shavings and for the inj the tech side no such thing as low side fuel pressure on the inj it all high pressure only low pressure would be return side which is inside the head and re direct fuel back to filter and for code p0088 sometimes pcm flash works and other don't it's the pcv valve sticking which will require hpp to be replace next time you go dealer ask the tech what the short fuel trims reading are for injectors and what are relative compression results and when he check for injectors did he perform tsb 08-16-7 if he can't answer following questions ask manager to get real diesel tech to work on your truck because that tech obviously doesn't have clue what's he doing
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Old 07-31-2014, 09:45 PM
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For p0088 look for signs of water damage in the fuel bowl, lift pump and high pressure pump.
I would call my insurance co to check on filling a comp claim.
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Old 08-01-2014, 04:56 AM
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I think the tech working on it does not know the procedures for P0088.
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http://www.ford-trucks.com/guidelines.html

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  #11  
Old 08-01-2014, 05:39 AM
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I'll talk with the tech again today and try and clarify the injector issue. Maybe i misunderstood. I know he said they checked the lift pump and couldn't find any issues there. He was supposed to check fuel bowl yesterday i'll ask about water though he should see that. How would you go about checking high pressure pump for water damage. I'm thinking they have't dealt with this p0088 much if at all. I'm not sure i understand. Filing a comp claim?
Thanks for all the help and input it's been very helpful.
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Old 08-01-2014, 06:01 AM
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To find water damage you have to pull the pump. With an injector showing low trim and that code it very suspect.
Once the pump is out disassemble it and look for any rust. Sadly once disassembled the pump must be replaced.
Complete fuel system is costly and many insurance Co will pay under comprehensive coverage. Get them involved now vs later it makes the claim easier
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Old 08-01-2014, 07:37 AM
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So just curious is there anything else that could cause low trim on an injector? Or does that just pretty much point to the hpfp?
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Old 08-01-2014, 08:32 AM
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bad injector itself I would assume.
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Scott-2013 F350 with a lot of tires.
2013 40' 4-slider stoneridge 5th wheel coming in at 15,400
http://www.ford-trucks.com/guidelines.html

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Old 08-01-2014, 10:04 AM
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Yup a melted piston low compression bad cylinder wall bent rod bad rocker arm. I'm sure I missed a few things that could also cause it but you get the idea
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Old 08-01-2014, 10:04 AM
 
 
 
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