Ford

Have Ford questions? Ask a mechanic for answers ASAP

Ask an Expert,
Get an Answer ASAP!

I have a 2006 Ford F-250 5.4 l that is running rough.

Customer Question
I have a 2006...

I have a 2006 Ford F-250 5.4 l that is running rough.

Mechanic's Assistant: Have you metered out the ignition system?

Yes. Problem does not seem to be from ignition system. All 8 plugs have now been replaced, 1 coil pack has been replaced, boots have been replaced on four others. It is no longer coding for misfire or ignition circuit malfunction. At idle the rpms bump up and down.

Mechanic's Assistant: Are you fixing your F250 yourself? What have you tried so far?

Trucks symptoms seem to align very much with egr valve problems however this engine does not have egr valve

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

I have spent time working on it myself and also paid a professional mechanic

Submitted: 6 months ago.Category: Ford
Show More
Show Less
Ask Your Own Ford Question
Answered in 1 minute by:
12/26/2017
Ford Mechanic: David Craig, Auto Mechanic replied 6 months ago
David Craig
David Craig, Auto Mechanic
Category: Ford
Satisfied Customers: 5,772
Experience: owner/mechanic at 3D Automotive
Verified

Hi my name is ***** ***** I'll be more than happy to assist you. Please allow me a few minutes to review your information. Thank you

Ask Your Own Ford Question
Customer reply replied 6 months ago
When I accelerate from a dead stop there will be a slight hesitation in the engine. Idling the rpm s bump up n down btwn 500-800 rpms. When speeds get up above 40 mph and you back your foot off the accelerator the engine will shake and run rough with a little bit of a popping noise. Not a full blown backfire noise
Ford Mechanic: David Craig, Auto Mechanic replied 6 months ago

are you hearing a rattling sound on top of the engine near the front of the valve covers?

Ask Your Own Ford Question
Customer reply replied 6 months ago
I don t think so
Ford Mechanic: David Craig, Auto Mechanic replied 6 months ago

check engine light?

Ask Your Own Ford Question
Customer reply replied 6 months ago
No check engine light anymore. Problem started with a misfire code on cylinder 8. Then shifted to po358 ignition rimsry secondary circuit malfunction. All plugs have now been replaced, one bad coil pack has been replaced, 4 coil boots have been replace, a broken evaporator valve has been replaced, and can sensor has been replaced. All coil packs and injectors seem to be working fine now, and truck is not coding for anything. We removed o2 sensors from in front of catalytic converters and it did not seem to change how the truck is running
Ford Mechanic: David Craig, Auto Mechanic replied 6 months ago

check the timing. go to #1 tdc on the compression stroke. check the marks.

Ask Your Own Ford Question
Ford Mechanic: David Craig, Auto Mechanic replied 6 months ago

5.4 tritons jump time alot

Ask Your Own Ford Question
Ford Mechanic: David Craig, Auto Mechanic replied 6 months ago

hows it going?

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 Ron Your Own Question
Ron
Ron
Ron, ASE Certified Technician
Category: Ford
Satisfied Customers: 25,022
25,022 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

25,022 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

28,993 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.

Mike V.

Mike V.

Auto Service Technician

1,556 satisfied customers

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

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.

< Previous | Next >

Related Ford Questions
I'm getting error code P0402 on my 2006 Ford F150. I've
I'm getting error code P0402 on my 2006 Ford F150. I've recently replaced all coil packs, plugs, and four O2 sensors on the exhaust pipes. I erase the code when it comes up and it usually doesn't come… read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
My engine has lots of problems so I'm changing the engine. I
My engine has lots of problems so I'm changing the engine. I don't know which to buy. The one with the egr or without? 02 F250 sd 5.4l … read more
Ron
Ron
ASE Certified Technician
25,022 satisfied customers
I have a 2002 Ford F-250 with a triton 5.4 just had all the
Ya I have a 2002 Ford F-250 with a triton 5.4 just had all the coils and spark plugs replaced and it still idles and runs rough? … read more
APenland
APenland
Ford Senior Master Technician
Associate in Industrial Management
3,186 satisfied customers
2002 F 150 5.4 oil pan leak. Appears to be the pan on t
Yes, and I want to know if I should remove the cross member directly under the pan. … read more
supermechanic
supermechanic
Service consultant
Vocational, Technical or Trade Scho
10 satisfied customers
ford f-250: ron.. I have a 2008 ford f-250 5.4 v8.. check
hi ron.. I have a 2008 ford f-250 5.4 v8.. check engine light came on while rough idle.. found out that #1 and #3 cyclinder miss fired.. need to replace coil pack… read more
APenland
APenland
Ford Senior Master Technician
Associate in Industrial Management
3,186 satisfied customers
My 03 f-150 5.4 misses when cold, drive a few blocks and then
My 03 f-150 5.4 misses when cold, drive a few blocks and then runs great! Has 117,000 miles on it. Truck is excellent cond. otherwise. thoughts?… read more
Canadafix
Canadafix
Auto shop owner
Vocational, Technical or Trade Scho
869 satisfied customers
ford f250: ford f250, runs rough when idling, seems to lose
ford f250, runs rough when idling, seems to lose power from time to time. had three coils replaced seems to be better, but will still sputter at idle from time to time… read more
Autotech58
Autotech58
Auto Repair Technician
Vocational, Technical or Trade Scho
268 satisfied customers
1998 Ford F-150: 2WD 4.6L 6..running rough..fuel injector..coil packs
1998 Ford F-150 pick-up 2WD 4.6L 6: running rough especially under acceleration. Received a #8 misfire code cleared code then received a #5 misfire code, cleared out and then received a #4 misfire cod… read more
Pavlin Koev
Pavlin Koev
Diagnostic Technician
High School or GED
2,687 satisfied customers
Ford f150: codes showing..po171..running rough..2001 168,000 miles
have 4 codes showing po301,po171,p1401,p1518, truck is running rough ford f150 2001 168,000 miles i have not had any trouble till now.… read more
Steve
Steve
Ford tech Specializing in electronics
Associate Degree
1 satisfied customers
99 F-250: L..Engine runs..the gears (auto) and misses
Have a 99 F-250 5.4 L work truck. Engine runs extremely sluggishly going up through the gears (auto) and misses. Trans shifts errat., speedometer works improperly, abs light is on. Picked up code PO50… read more
Dodge expert
Dodge expert
ASE MASTER TECH, REPAIR FACILITY OWNER
High School or GED
3,636 satisfied customers
f150: die..brake or when stopping at stop sign or stop light, any idea
05 f150 5.4 motor, truck wants to die when in drive and foot on brake or when stopping at stop sign or stop light, any idea… read more
CTFordTech
CTFordTech
Auto Technician
Vocational, Technical or Trade Scho
4,460 satisfied customers
2001 f150: misfiring..it idles..most apparent when it shifts gears.
My 2001 F150 5.4 engine just started misfiring. It felt like a transmission problem at first, but I realized it was doing it at low rpms and even now when it idles. It is most apparent when it shifts … read more
Ron
Ron
ASE Certified Technician
25,022 satisfied customers
2004 f 250: with 5.4 litre.check engine light came..my oil..egr valve
i have a 2004 f 250 superduty.gas with 5.4 litre.check engine light came on and guys that changed my oil said the computer read that it was my egr valve. i replaced it and truck is running real rough … read more
CTFordTech
CTFordTech
Auto Technician
Vocational, Technical or Trade Scho
4,460 satisfied customers
98 Ford F-250: check engine light..fuel filter..hoses..spark plugs
I have a 98 Ford F-250 with the f-150 body style it has the 5.4 triton in it. The problem i am having with it is it has a check engine light it is throwing a lean code in both banks. I changed the fue… read more
BOBBYSS
BOBBYSS
TECHNICIAN/ADVISOR
Associate Degree
8,343 satisfied customers
2004 ford f-150: coils..fuel filter..air filter..12 in throttle body
2004 ford f-150 4x4 5.4 L. truck is shuddering and rough idle, at a steady speed (55) it surges and shakes like it has a miss , changed plugs, changed two coils,run injector cleaner through it .Put a … read more
howard
howard
Associate Degree
30 satisfied customers
1997 F-250: misfire cylinder 4 on 5.4 liter triton
misfire cylinder 4 on 5.4 liter triton 1997 F-250 light duty. Which cylinder is number four?… read more
CTFordTech
CTFordTech
Auto Technician
Vocational, Technical or Trade Scho
4,460 satisfied customers
Expedition: rough..i checked the spark plugs and their ok..fuel filter
my 03 expedition is idioling rough it started like 4 to 5 days ago i checked the spark plugs and their ok should i replace the fuel filter ? what can i do next… read more
Steve S
Steve S
Team Leader Shop Foreman
High School or GED
1,847 satisfied customers
2003 f 250: a low rpm engine miss under load..stalled..ford dealer
i have a low rpm engine miss under load in my 2003 f 250 f by 4 with a 5.4 a few times it has even stalled at a stop. i have replace the plugs.it shows no engine service light.took it to a ford dealer… read more
Larry
Larry
Technical Editor
Bachelor's Degree
718 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