Ford

Have Ford Questions? Ask a Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Ford

Ford f250 V10 6.8L: 2010 Ford F250 V10 6.8LWill go to 40%

Customer Question
2010 Ford F250 V10 6.8L Will...
2010 Ford F250 V10 6.8L
Will go to 40% throttle then the rpm dies down and she wont take her fuel
If i let go of fuel a bit she comes back to life.
If i slowly accelerate she can do 120 no problem.If i floor it she dies down until i let go of gas peddle and the Rpm revs up again.
I changed the fuel filter and plugged in computer
P0191 was showing and sometime P0171 and P0174
But that stopped, p0191 keeps coming up
Another code came up, not sure of number but it was a fuel error
I changed the fuel rail pressure sensor and it didnt do a thing
I unplugged my fuel filter and let the fuel pump through the filter to see the pressure it just seamed to have a weak stream it didnt shoot out with high pressure
Please help
Thanks
Submitted: 2 years ago.Category: Ford
Show More
Show Less
Ask Your Own Ford Question
Answered in 1 hour by:
5/1/2015
Ford Mechanic: HDGENE, Ford Senior Master/Diesel/Trans replied 2 years ago
HDGENE
HDGENE, Ford Senior Master/Diesel/Trans
Category: Ford
Satisfied Customers: 6,000
Experience: 28 years Auto experience, Ford ,GM, Chrysler, Asian & European
Verified
Hello, it sounds like a weak fuel pump issue, it should have approx 60 psi with a gauge, it would explain the lean P0171/P0174 codes and Fuel rail pressure code if it indicated a loss of pressure. The pump will only prime for a few seconds when you turn the key to on, it needs to be checked with a fuel pressure gauge and a scan tool that can read the Fuel Rail pressure sensor input when it looses power to be sure it is a fuel pump problem
Ask Your Own Ford Question
Customer reply replied 2 years ago
How big of a job is it to change a fuel pump
Also would this be something that would be included on a powerfeain warranty?
Thanks
Ford Mechanic: HDGENE, Ford Senior Master/Diesel/Trans replied 2 years ago
Depends which way you go about replacing the pump. you can jack up the bed and gain access to it, but isnt 100 percent safe if you havent done that way before, def a few hours to drop the fuel tank and need a special tool to unscrew the fuel pump retainer to the tank. It might be depending on the type of powertrain coverage of extended service plan you have through ford. I would typically say yes, but contact your local dealer first to be sure.
Ask Your Own Ford Question
Ask Ron Your Own Question
Ron
Ron
Ron, ASE Certified Technician
Category: Ford
Satisfied Customers: 24,320
24,320 Satisfied Customers
Experience: 23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs

Ron is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

AlvinC answered a question about my Ford truck that only someone with an in-depth knowledge of his subject would have known what was going on.

Rich DUSA

Because of your expertise, you armed me with enough ammunition to win the battle with the dealer. They are installing a fuel filter and fuel pump at no charge to me.

MollyUSA

I needed help with my car on Saturday morning....got a response in 5 minutes, and it was the perfect solution. Thanks again to your service.

Jason V.Kirkland, WA

I do know, after going though this with JustAnswer, that I can somewhat trust my mechanic but I will always contact you prior to going there.

BRNew Jersey

I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry.

Stephanie PElm City, NC

used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future.

David L.Richmond, TX

9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much.

PhilMarysville, CA

< Previous | Next >

Meet the Experts:

Ron

Ron

ASE Certified Technician

24,320 satisfied customers

23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs

Chris (aka- Moose)

Chris (aka- Moose)

Technician

28,139 satisfied customers

16 years experience

John Mc

John Mc

Ford Technician

5,495 satisfied customers

19 years Ford Lincoln Mercury experience

Chuck

Chuck

ASE Certified Technician

1,685 satisfied customers

33 Years Experience,Ford Senior Master,ASE Master,L1 Advanced Engine Performance

Cam

Cam

Journeyman Automotive Technician

10 satisfied customers

GM Grand Master Technician 2007. 14 years Automotive experience.

Richard

Richard

ASE Certified Technician

1,524 satisfied customers

12 years at a Ford Lincoln/Mercury and Jaguar dealer as a technician and shop foreman.

Mike V.

Mike V.

Auto Service Technician

1,380 satisfied customers

25 years experience on all makes and models, Licensed NYS Inspector.

< Previous | Next >

Related Ford Questions
I have ford fusion 2016 with 50.000 mile one owner
I have ford fusion 2016 with 50.000 mile one owner maintained well . how common is the transmission shifter cable to brake and have to be replaced . Does this happen very often? … read more
Michael
Michael
Automotive Technician
High School or GED
257 satisfied customers
Have a 1981 f-150..new motor..new clutch..but when I let off
Have a 1981 f-150..new motor..new clutch..but when I let off gas going down the road I hear a clunk .. then a gap speeding up..hope I'm not losing tranny after all this.. … read more
Pete
Pete
Mechanic
Construction, Plant Fitter
57 satisfied customers
My 2017 escape keyless outside door pad is not excepting the
my 2017 escape keyless outside door pad is not excepting the factory code … read more
Michael
Michael
Automotive Technician
High School or GED
257 satisfied customers
My Ford F150 feels like it might be slipping partially
My Ford F150 feels like it might be slipping partially towards 4H from 2H at odd times inadvert … read more
Michael
Michael
Automotive Technician
High School or GED
257 satisfied customers
May have caused a problem trying to fix another problem. Was
hello, may have caused a problem trying to fix another problem. Was hooking up a rear heater/ ac unit where the plug was missing. First the fan was working but from the dash controls the heat was on, … read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
4,421 satisfied customers
2007 lariat has a red light just above headlight switch. It
2007 lariat has a red light just above headlight switch. It blinks real fast all the time. It's not the light under the windshield. Just bought it and dealer is ignorant.… read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
4,421 satisfied customers
Have a 13 edge,,woke up to 4° weather temp at hotel I was
Have a 13 edge,,woke up to 4° weather temp at hotel I was staying at,went to open driver's door and door was froze alittle to the seal but was able to get it open,drove to were I was working at and cl… read more
Ron
Ron
ASE Certified Technician
24,320 satisfied customers
02 E450 with 7.3 powerstroke. Keeps stalling. Had cam code
02 E450 with 7.3 powerstroke. Keeps stalling. Had cam code (p0340 I believe). Cam sensor replaced. Still stalling. Replaced IPR still stalling. Where should I begin this diagnosis?… read more
Chris (aka- Moose)
Chris (aka- Moose)
Technician
Vocational, Technical or Trade School
28,139 satisfied customers
I have a 2000 Ford Expedition. It leaks water on passenger
I have a 2000 Ford Expedition. It leaks water on passenger side need firewall. I suspect its heater core. Been leaking for a while. Now my car won't start. I put new battery changed alternator a few m… read more
Todd M
Todd M
Owner
ASE Certification
1,486 satisfied customers
Fixed the OBD codes. ,but it still has a miss and backfire.
yes new coil on cylinder 6 and new mass air flow sensor … read more
Mike V.
Mike V.
Auto Service Technician
High School or GED
1,380 satisfied customers
Trying to see what to test for certain codes it is throwing,
Trying to see what to test for certain codes it is throwing … read more
Michael
Michael
Automotive Technician
High School or GED
257 satisfied customers
I need my rmu module activated. Just that
I need my rmu module activated JA: Okay, I'll connect you to the mechanic to discuss this further with you. Before I do, is there anything else you want him to know? Customer: Just that… read more
Kenny Z
Kenny Z
Ford Senior Master Technician
High School or GED
16 satisfied customers
I'm interested in buying a used 2009 Ford Fusion, but am
Hi, I'm interested in buying a used 2009 Ford Fusion, but am hesitant because the engine light is on. I asked the owners to get the code, and it came back as P0452, Evaporative Emission System Pressur… read more
kalamykid
kalamykid
Pactor automotive
Vocational, Technical or Trade Scho
97 satisfied customers
My 2000 f250 wipers and radio don't work when truck is
My 2000 f250 wipers and radio don't work when truck is running they work only when the switch is on exila … read more
APenland
APenland
Ford Senior Master Technician
Associate in Industrial Management
3,186 satisfied customers
Power steering hose is leaking like a sieve on a 2010 ford
power steering hose is leaking like a sieve on a 2010 ford edge … read more
roy
roy
Associate Degree
3 satisfied customers
I am having a problem with my 2014 Ford Flex (Build February
I am having a problem with my 2014 Ford Flex (Build February 04, 2014). The power liftgate is inoperable, it will only open about an inch when the button is pushed from the key fob, the button in the … read more
Chris (aka- Moose)
Chris (aka- Moose)
Technician
Vocational, Technical or Trade School
28,139 satisfied customers
Driver side power seat wont work,,passenger seat works fine.
driver side power seat wont work,,passenger seat works fine … read more
Chris (aka- Moose)
Chris (aka- Moose)
Technician
Vocational, Technical or Trade School
28,139 satisfied customers
The steering on the Ford edge get hard after engine runs for
The steering on the Ford edge get hard after engine runs for a while … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x