P0088 Continued
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Information Junkie
Joined: Feb 2008
Posts: 151
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From: Port Austin MI
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
Thanks in advance
New User
Joined: Feb 2007
Posts: 18
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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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Information Junkie
Joined: Feb 2008
Posts: 151
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From: Port Austin MI
Yeah i'm sure that'll be the first thing. Was your truck hesitating and falling on it's face when accelerating?
Super Moderator
Joined: Aug 2008
Posts: 37,379
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From: Frederick, MD
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.
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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Information Junkie
Joined: Feb 2008
Posts: 151
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From: Port Austin MI
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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5th Wheeling
Joined: Jul 2014
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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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Thread Starter
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Information Junkie
Joined: Feb 2008
Posts: 151
Likes: 0
From: Port Austin MI
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.
Thanks for all the help and input it's been very helpful.
Post Fiend
Joined: Oct 2009
Posts: 12,123
Likes: 35
From: N. Fort Worth, tx
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
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