On a trip to Kentucky from Virginia pulling a 6,000 lb travel trailer I received the “Low Fuel Pressure” warning indicator on the dash. It gives it to me 2 minutes after starting the truck every time now. (2017 6.7 Platinum, stock, bought brand new)

My first thought was to replace the fuel filters, so I tried that. (No help, but they did need it) Using forscan, I guessEd on the PIDS to look at, but I took a look at the “requested fuel pressure” and the “actual pressure” PIDS, or something like that. It looks like the truck is “requesting” 111 psi, but the pump is only supplying 25-35 psi depending on the load. (If I’m reading everything correctly).

Bottom line, the truck went into “Reduced power mode” twice while climbing a hill at high RPM and died on me. Before I get flamed, I was in the middle of nowhere and there was no chance of getting a tow anywhere reasonable so I risked it. I traveled the rest of the 3 hour trip and have an appointment with the dealer tomorrow. The truck seems to drive fine, and gives the error on every start up, but doesn’t flag the CEL.

I’ll keep you guys posted. Any idea what else could cause this? I’m thinking water in fuel (never received a warning, and drain/test on a regular basis) or a low pressure fuel pump. I think the latter is rare, but I’ve heard of odder things. Thanks guys!

 

Maybe something like this thread can give you some ideas?

https://www.ford-trucks.com/forums/1...6-7-p0087.html

 

Thanks BOSS 379. I did see that thread while I was searching, but mine is throwing a P008A code, vice a P0087, so I figured the OP and I were working different issues.

From Forscan:
===PCM DTC P008A:00-2F===
Code: P008A - Low Pressure Fuel System Pressure - Too Low

I appreciate the help! I’ll update the post after I see what the dealer says.

 

Dealer says they are replacing the low pressure fuel pump. It’s only pushing around 30psi, which they claim is actually 30psi of “suction” from high pressure pump. Luckily, it’s covered under the power train warranty.

Question for the group: Based on being stranded on a Saturday, I was forced to buy a Duralast fuel filter from autozone to try and remedy the low pressure light and get back on the road. Dealer is claiming that the owners manual says I can only use Motorcraft filters. He says all the others will crush under the suction of the fuel system. I’ve never heard such a thing...he is all but telling me I have to replace it. Good news is that he isn’t going to charge any labor on it, only parts, so I’m going to eat the $100 he’s charging. He said he had to pull the old one out anyway to test the system. It is odd that based on the r&r of the old one, that also wouldn’t be covered under warranty.

It’s only $100, so I’m not stressing, it’s just something I’ve never heard of before. Curious of the thoughts from the group. Thanks!

 

I would take this up with the service manager to see what they can do. I’m sure the tech crushed your old filter already so there won’t be a way to verify that the Duralast is incompatible.

On one hand, you’re stranded and need to do whatever you can to get going. You don’t have the luxury to walk over to a Ford dealership or pick an auto part store that has a MC filter. Also since the filter is not germane to your problem, then they cannot claim using a non-MC filter caused the issue.

However, on the other hand, since the filter was not the issue, the dealer doesn’t necessarily have to compensate for it.... Sort of like if your upfitter didn’t work and you replaced the relay when it was the fuse, the dealer doesn’t have to compensate you for the relay you put in.

Hopefully the service manager will realize goodwill with a customer is worth more than the $100 filter.

 

The low pressure pump fixed it under warranty. Cost would have been around $1000 if paid out of pocket. The low pressure PID now shows around 65 psi of pressure, so that’s good news. No more warnings, the truck power is back, and it tows perfectly once again. Maybe this post will help someone in the future. Thanks Boss for your replies.

 

Nice, thanks for updating the thread. Glad it was fixed under warranty. Did they hook you up re: aftermarket filter?

 

Nope, they sure didn’t. I ended up paying $100 for the filter, and no installation charge. I suppose it could have been worse!

He did mention that filters are never covered even when warranty work is done. For example, if they need to pull out your airbox to do some warranty work and they see the filter needs changed, you’re paying for it, even if they already had to take it off for the work. No charge for the swap, just the filter. I suppose that makes sense, but I truly don’t think it was necessary to swap it.

 

No harm no foul if the prevailing cost of that filter is close to $100. If they can be sourced cheaper it would be good to keep one in the truck for emergency or this type of situation.

The stealership by me wanted $70 for Motorcraft air filters... no thanks.

 

You nailed it Boss. Lesson learned for me...right at $50 off Amazon for both upper and lower filters. It’s been in my shopping list for when I needed to order it, now it will be sitting in my truck.

Motorcraft FD4625 FD-4625 Element

 

The only problem here a new replacement Motocraft Low Pressure Fuel Pump comes with the filter installed. No need for you to buy a new one. Do a google search on it. The dealership took you for the $100.00 they call it upselling. Also the manual also says you can only use Motocraft Oil and Motocraft Antifreeze. How many follow that? While the Warranty is active I highly recommend it as it makes it easier for Warranty covered repairs, after that use what the community recommends or you feel comfortable with. Do you really think Duralast would sell a filter they say state meet or exceed OEM Spec's would crush in use, They law suites for engine replacements would be huge.

 

3 year old thread revival, impressive! Ha ha…

Not sure what you are mean that it comes with a filter installed. The low pressure pump is in the fuel tank, and the 2 fuel filters on a 6.7 are in front of the fuel tank and in the engine bay.

I do completely agree with your point on warranty and the claim that aftermarket filters crush under the suction. I would
find that hard to believe that aftermarket “meet or exceeds OEM spec” claims would allow that to be the case.

Either way, I was more than happy to pay the $100 since they covered everything else under warranty. Now I purchase motorcraft filters off Amazon and just call it a day and don’t worry about it.