Ford

Have Ford questions? Ask a mechanic for answers ASAP

Ask an Expert,
Get an Answer ASAP!

This answer was rated:

I have a misfire in my lincoln navigator 5,4 l. Random

I have a misfire...

I have a misfire in my lincoln navigator 5,4 l

Mechanic's Assistant: How many miles are on the car? Is it a steady misfire? Or random?

Random misfire. 119000 mi

Mechanic's Assistant: What year is your Navigator?

2005

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

Yes. i have change altinator. sparkplugs. fuel control modul. coil. injector

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

I dont think so

Show More
Show Less
Ask Your Own Ford Question
Answered in 5 minutes by:
3/16/2018
Mike V.
Mike V., Auto Service Technician
Category: Ford
Satisfied Customers: 27,497
Experience: 25 years experience on all makes and models, Licensed NYS Inspector.
Verified

My name is ***** ***** give me a moment to review your question Thanks.The site will prompt a call.I will let you know if it's necessary

Ask Your Own Ford Question

Is the P0300 code your only code?
Also, have you replace all the coils on it or just one?

Ask Your Own Ford Question
Customer reply replied 4 months ago
po208 p1000 po208FF po352 FF po 357 FF po358 FF po1000 FF
Customer reply replied 4 months ago
i have try to change 3 coil an all sparks plugs

Thanks for the info.

I assume the engine is running rough at idle as well as going down the road?

Ask Your Own Ford Question

I think with so many misfires that weren't resolved with the coils and plugs I would check for intake leaks. With the engine running, spray some carb cleaner along the intake manifold and see if the idle speed increases or smooths out. One code is pointing to a problem with the fuel injector, but still, I would look for the intake leak to start. If that doesn't produce any results, I believe I would take a compression test on the engine. This could give you some insight as yo what might be going on inside the engine. Its possible you have a timing issue causing all these misfire codes, but I would start with the leak check, if you have a bad intake gasket it could be causing this many misfires in my opinion. Especially since the coils didn't do anything to solve the problem.

Please let me know if there is anything else I can do to help.
Just Answer does not compensate me for my time and resources, you do when you rate my answer by using the stars at the top of the page. Payment for your question includes any follow-up questions you may have. Free trials and subscription questions still require ratings. Your question does not close after you rate. You will still be able to contact me by replying to this post.
Thank you so much!

Mike V.
Mike V., Auto Service Technician
Category: Ford
Satisfied Customers: 27,497
Experience: 25 years experience on all makes and models, Licensed NYS Inspector.
Verified
Mike V. and 87 other Ford Specialists are ready to help you
Ask your own question now
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 Mike V. Your Own Question
Mike V.
Mike V.
Mike V., Auto Service Technician
Category: Ford
Satisfied Customers: 27,497
27,497 Satisfied Customers
Experience: 25 years experience on all makes and models, Licensed NYS Inspector.

Mike V. 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

27,497 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
The scanner is reading that the cylinder #1 has a misfire I
The scanner is reading that the cylinder #1 has a misfire I change the ignition coil and the spark plug and it's still shaking and has a strong smell of gas when I turn it on.. … read more
Matt
Matt
Engineer
Bachelor\u0027s Degree
5 satisfied customers
I have a 2013 F150 with a 5.0L V-8. For the past year I have
I have a 2013 F150 with a 5.0L V-8. For the past year I have had random rough idling and occasionally the check engine light will come on. I have an OBDLink analyzer and the problem is mis-fires in cy… read more
Mike V.
Mike V.
Auto Service Technician
27,497 satisfied customers
GARGE SAIS MIS FIRE IN 1&3 CYLINDER, REPLACED ALL PLUGS &
GARGE SAIS MIS FIRE IN 1&3 CYLINDER , REPLACED ALL PLUGS & COIL PACKS ON THOSE CYLINDERS , STILL MIS FIRE , ANY HELP … read more
John Taylor
John Taylor
Automotive Technology
24 satisfied customers
I get a p0301 code reading on a 98 expedition, 4 wheel
I get a p0301 code reading on a 98 expedition,***** 4.6 L engine. I changed the driver side coil pack with no results of eliminating the misfire, please help..... … read more
Eric
Eric
Auto Technician
589 satisfied customers
Hange coil n sparkplug n fuel injecter still misfire on
Hange coil n sparkplug n fuel injecter still misfire on number 3 cylinder on 5.4 expedition what else could it be? … read more
Mike V.
Mike V.
Auto Service Technician
27,497 satisfied customers
2005 ford e450 v10 has a reoccurring p0174 and p0309.
2005 ford e450 v10 has a reoccurring p0174 and p0309. changed coil , plug , injector , and intake manifold gasket set, still have same codes come back on after a few hundred miles. im realy stuck on t… read more
HDGENE
HDGENE
Master Technician/Lead Technician
Associate Degree
2,835 satisfied customers
I have a rough idle. random misfire and misfire on
Hello, I have a rough idle. random misfire and misfire on cylinder3. throttle is sluggish. when reved the engine is at high rpm is is srough but all of a sudden it smooths out and will stay smooth unt… read more
TIM MOHR
TIM MOHR
SHOP OWNER
Master's Degree
8,037 satisfied customers
ford f150 king ranch 5.4: 2005 Ford F150 King Ranch 5.4 108,000
2005 Ford F150 King Ranch 5.4 108,000 mi Symtoms: Rough idle / Black exhaust / Engine shake, shudder and misfires will driving. Pulled codes: P0172 - Sys Too Rich (bank1) P0300 - Random/Multiple Cylin… read more
James
James
Bachelors degree automotive technology with minor in diesel
3,578 satisfied customers
F150 4.6: 2003 F 150 4.6 enjine Started it and began to
2003 F 150 4.6 enjine Started it and began to misfire. Ran fine when I turned it off. My autoxray said "Cylinder 2 Misfire Detected". Where is #2 and what should I do.… read more
Dieseljunky2
Dieseljunky2
Locomotive Mechanic
Ford Certified Technician
310 satisfied customers
2005 Ford f150: V8..coil/injector changed on one cylinder..fuel filter
2005 Ford F150 uperCrew Lariat 5.4L V8 125,000 mi Gasoline smell in cabin after startinmg and turning in HVAC to outside air. Just had coil/injector changed on one cylinder- not sure if spark plug Las… read more
Kenny Z
Kenny Z
Ford Senior Master Technician
High School or GED
16 satisfied customers
2005 Ford Expedition: 5.4L..mis-firing..1 week later same problem
I have a 2005 Ford Expedition (V8, 5.4L) . 3 weeks ago it started mis-firing. Mechanic replaced #1 coil/sparkplug. 1 week later same problem, mechanic said that now the #1, #2, #3 coils were bad, repl… read more
CTFordTech
CTFordTech
Auto Technician
Vocational, Technical or Trade Scho
4,460 satisfied customers
2004 lincoln navigator: intermitent..stop, the navi sometimes bogs
hi, i own 2004 lincoln navigator. im experiencing intermitent drivability problems. when you come to a stop, the navi sometimes bogs when you step on the excelerator. it often hesitates while driving.… read more
EMRSR
EMRSR
High School or GED
138 satisfied customers
1997 f250: that is hesitating when I accelerate..trailer..overdrive
I have an 1997 f250 4x4 truck that is hesitating when I accelerate. The problem started after I pulled a trailer. If I switch the overdrive off it seems to work better.… read more
EMRSR
EMRSR
High School or GED
138 satisfied customers
ford f250: 5.4L..it miss fire..spark plugs and fuel pressure regulator
I have a ford f250, 2005, 5.4L engine it a gas engine. it miss fire on start up and give codes po175, po306 and po300. it was happing before I change the spark plugs and fuel pressure regulator… read more
Ron Z.
Ron Z.
Vocational, Technical or Trade Scho
2 satisfied customers
F-150: 5.4L..running rough..two mechanics..they have replaced 6 coils
I have a 2000 5.4L F-150. The engine has been running rough and missing. Have taken it to two mechanics and between the two, they have replaced 6 coils. After the last mechanic replaced 5 coils, the t… read more
CTFordTech
CTFordTech
Auto Technician
Vocational, Technical or Trade Scho
4,460 satisfied customers
2000 Lincoln LS: idling..intermittently misfires..neutral..stall
My 2000 Lincoln LS misfires during both idling and under load. It continuously misfires when under load, especially going up hill in OD at low rpms (~1800 rpms around 40 mph), and only intermittently … read more
Clayso
Clayso
Lead Technician
ASE Master Technician 1999
274 satisfied customers
1999 Ford F250: 000 miles..the Service Engine Soon light comes on
I have a 1999 Ford F250 Superduty Crewcab V10 with 125,000 miles. Sometimes it starts and want start. It will run good then bog down and die after the Service Engine Soon light comes on. I have had a … read more
lamontgomery
lamontgomery
Ford Technician
Associate Degree
465 satisfied customers
2000 explorer: starts to sputter after it warms..sparkplugs..coils
my 2000 explorer starts to sputter after it warms up we have changed sparkplugs, wires and coils whatis next… read more
Chris (aka- Moose)
Chris (aka- Moose)
Technician
Vocational, Technical or Trade School
28,993 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