Ford

Have Ford questions? Ask a mechanic for answers ASAP

Ask an Expert,
Get an Answer ASAP!

2008 F250 5.4L runs rough. P0345, clear, P0349 clear and now…

Customer Question
2008 F250 5.4L runs...

2008 F250 5.4L runs rough. P0345, clear, P0349 clear and now P0344 constant will not clear.

Mechanic's Assistant: Sometimes things that you think will be really complicated end up being easy to fix with a Ford. The Ford Mechanic I'm going to connect you with knows all the tricks and shortcuts. Tell me a bit more about what's going on so he can help you best.

Before engine light. good oil pressure. instant gauge at 0; then good oil pressure for a three time sequence. Now engine runs rough with what sounds life lifter noise

Mechanic's Assistant: Are you hoping to fix this yourself?

Yes. Unless special test equipment is required

Mechanic's Assistant: Great! What have you tried so far?

All I have done is start truck and read codes and clear codes. All with good oil pressure

Mechanic's Assistant: Is there anything else the Ford Mechanic should be aware of about your Ford?

140,000 miles. was driving 75 speed limit when oil pressure was good,0, good. No prior engine problems

Submitted: 2 years ago.Category: Ford
Show More
Show Less
Ask Your Own Ford Question
Answered in 5 minutes by:
2/22/2016
Ford Mechanic: roy, import/domestic specialest replied 2 years ago
roy
roy, import/domestic specialest
Category: Ford
Satisfied Customers: 7,587
Experience: ASE master tech for 40 years
Verified

good evening my name is ***** ***** I will assist

first, stop clearing the codes, it does nothing for the problem. there is freeze frame data stored when a code sets and that info can be valuable when trying to determine the failure

the engine noise, is it all the time or just when the gauge goes to 0??

Roy

Ask Your Own Ford Question
Ford Mechanic: roy, import/domestic specialest replied 2 years ago

the 344,345,349 codes are related to cam sensor readings. this could all be related to your oil pressure issue. if you do loose oil pressure as you indicated, the tensioners for the timing chains need oil pressure to keep them tight with no slack. without proper oil pressure, the chains will slack and the timing will not be correct. that is a good reason to set the code.

what is needed is to have a manual pressure test performed to verify the oil pressure. if it is low it could be a partially clogged pick up screen from dirt or debris or a bad oil pump. I would start here. you could try to flush your oil system. get some sea foam, add it to your oil, let it run for about an hour and the change the oil and filter and see if it still happens.

Roy

Ask Your Own Ford Question
Ford Mechanic: roy, import/domestic specialest replied 2 years ago

how are you making out

Ask Your Own Ford Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a ford mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask roy Your Own Question
roy
roy
roy, import/domestic specialest
Category: Ford
Satisfied Customers: 7,587
7,587 Satisfied Customers
Experience: ASE master tech for 40 years

roy 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

24,610 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

28,466 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

1,455 satisfied customers

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

< Previous | Next >

Related Ford Questions
i have a 2003 ford explorer xlt and my oil pressure gauge drops
i have a 2003 ford explorer xlt and my oil pressure gauge drops down when i step on the gas and some times in idle it will go down and some times it stays ok, what do i need to do to fix this… read more
RJ
RJ
Ford Tech
High School or GED
1,573 satisfied customers
F350: I replaced all 8 injectors..powerstroke..6.0l..doesnt start
I replaced all 8 injectors on my f350 powerstroke 2003 6.0l diesel and it doesn't start.… read more
Chris (aka- Moose)
Chris (aka- Moose)
Technician
Vocational, Technical or Trade School
28,466 satisfied customers
My ford escape oil pressure comes on and of in sec
my ford escape oil pressure comes on and of in sec… read more
Chris (aka- Moose)
Chris (aka- Moose)
Technician
Vocational, Technical or Trade School
28,466 satisfied customers
What are the procedures for replacing the oil pump assy on a
what are the procedures for replacing the oil pump assy on a 2009 Hyundai Tucson with a 2.0 engine… read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
24,610 satisfied customers
I cannot find the timing for the oil pump I'm replacing the
I cannot find the timing mark for the oil pump I'm replacing the timing belt on my 93 Ford 2.3 Ranger … read more
Randall
Randall
Auto Technician / Consultant
Vocational, Technical or Trade Scho
69 satisfied customers
Changed oil pump & timing chain & after about two weeks I
Changed oil pump & timing chain & after about two weeks I lost oil pressure again and the truck started clicking, lost power and died. Started it back up the oil gauge was bottomed out & the truck was… read more
Kenny Z
Kenny Z
Ford Senior Master Technician
High School or GED
16 satisfied customers
Should oil pump out of filter hosing when cranking over with
Should oil pump out of filter hosing when cranking over with filter removed … read more
Steve W
Steve W
Line Technician
Vocational, Technical or Trade Scho
1,968 satisfied customers
On a 2006 Ford Freestar with 4.2 engine, the engine oil pump
On a 2006 Ford Freestar with 4.2 engine, the engine oil pump mounting gasket was bad. I wiggled a bit and managed to slip the pump/filter housing off. Now I can't seem to get it to slip on again. It's… read more
Steve W
Steve W
Line Technician
Vocational, Technical or Trade Scho
1,968 satisfied customers
98 mustang 3.8 no oil pressure put new oil pump and cam
98 mustang 3.8 no oil pressure put new oil pump and cam shafts synchronizer … read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
No oil pressure. Oil pump do not know how old.bought the
oil pump do not know how old.bought the truck used and the oil light is on … read more
Michael
Michael
Automotive Technician
High School or GED
257 satisfied customers
Is there a defect with the oil pump on the ford ranger 4x4
is there a defect with the oil pump on the ford ranger 4x4 2014 model … read more
6Bucs
6Bucs
Senior Master Tech
Associate Degree
3 satisfied customers
Changed high pressure oil pump and engine does not crank.
changed high pressure oil pump and engine does not crank. Batteries and starter are good, but will not turn over. 2006 F250 6.0… read more
Jeremy
Jeremy
Technician
Vocational, Technical or Trade Scho
104 satisfied customers
2005 powerstroke diesel 6.0. died out on road and will crank
2005 powerstroke diesel 6.0. died out on road and will crank but not fire up. Has 3 codes P2290 ICP too low, P2614 Cam sensor open and P2617 crank sensor open. All 3 sensors are new. Have had an inter… read more
lostrider
lostrider
lead technician/working shop foreman
Vocational, Technical or Trade Scho
2,958 satisfied customers
explorer: ford explorer 4.0 sohc 2004 noisy front chain , this
ford explorer 4.0 sohc 2004 noisy front chain , this was a job made in another shop , they put all timing kit because one of the guides was broken and all broken parts was at pick up stray , so i remo… read more
John Crouch
John Crouch
lead senior master tech
Vocational, Technical or Trade Scho
1,383 satisfied customers
Where is ICP Sensor located? 2006 Ford F250 SD 6.0
Where is ICP Sensor located? 2006 Ford F250 SD 6.0… read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
I have a 2013 Ford Edge, the Low oil Pressure signal came on
I have a 2013 Ford Edge, the Low oil Pressure signal came on and will not stop beeping, constantly. Car is driving fine, perhaps a bit less power then I am used to, when I accelerate. Just wondering i… read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
24,610 satisfied customers
1999 ford f250: 5.4l..im trying to pull oil pan to change oil
i have a 1999 ford f250 5.4l and im trying to pull oil pan to change oil pump... But pan does not seem 2 want to come out do i need 2 pull motor in order to remove pan?… read more
lostrider
lostrider
lead technician/working shop foreman
Vocational, Technical or Trade Scho
2,958 satisfied customers
How do I test the high pressure oil pump on my 6.
how do I test the high pressure oil pump on my 6.0 powerstrke… read more
connor75
connor75
Technician
Vocational, Technical or Trade Scho
356 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