Ford

Have Ford questions? Ask a mechanic for answers ASAP

Ask an Expert,
Get an Answer ASAP!

A few days ago change 2 engine coils and spark plugs and the…

Customer Question
A few days ago...

A few days ago change 2 engine coils and spark plugs and the engine light when off, but now came on again

Mechanic's Assistant: How many miles are on the car? When did you last change the plugs?

There is 263 K miles and is running good but the light

Mechanic's Assistant: What is the model/year of your Ford?

2004 expedition w/4.6 engine

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

Change some coils and three spark plugs recomended by mechanmic

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

That's it

Submitted: 7 months ago.Category: Ford
Show More
Show Less
Ask Your Own Ford Question
Answered in 5 minutes by:
12/28/2017
Ford Mechanic: Marty, ASE Certified Technician replied 7 months ago
Marty
Marty, ASE Certified Technician
Category: Ford
Satisfied Customers: 55,285
Experience: Shop owner with over 30 years experience servicing foreign and domestic autos.
Verified

Hi, my name is***** you only changed 3 plugs and 2 coils there is a good possibility that some of the remaining plugs or coils are giving trouble. The first thing that will need to be done is a diagnostic scan of the engine control unit to see what fault codes are stored in the control unit. The fault codes will point to the specific problem. It's also possible that there is an unrelated problem that is causing the check engine light to come on. The test will give you codes that will point to the problem area.

Let me know if you have any questions.

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 Marty Your Own Question
Marty
Marty
Marty, ASE Certified Technician
Category: Ford
Satisfied Customers: 55,285
55,285 Satisfied Customers
Experience: Shop owner with over 30 years experience servicing foreign and domestic autos.

Marty 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

25,182 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

29,223 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

1,591 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
Super Bob, I've got a 98 expedition 4.6 with 230000mi. It
Super Bob, I've got a 98 expedition 4.6 with 230000mi. It has been very well maintained. It started idling and accelerating rough the other day. I took it to my local mechanic and after checking wires… read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
25,182 satisfied customers
I've bought a ford expedition 4.6 2v romeo motor to be
I've bought a ford expedition 4.6 2v romeo motor to be swapped out for my knocking 4.6 2v romeo that's in my 1999 f150. What all do I need to do to get this engine to be put in to my f150. And what ar… read more
roy
roy
Associate Degree
3 satisfied customers
Ford F150 Pickup 4x2: f150, engine started running rough today
f150, engine started running rough today now engine light is on, shudders when you push on the gas… read more
Steve W
Steve W
Line Technician
Vocational, Technical or Trade Scho
1,968 satisfied customers
2006 expedition: runs good..uphill..jumps..i floor it it speeds up
i have a 2006 expedition runs good but when traveling and trying to maintain speed uphill trying to speed up slightly the engine jumps like it is running out of gas if i floor it it speeds up fine… read more
Steve S
Steve S
Team Leader Shop Foreman
High School or GED
1,847 satisfied customers
2007 Explorer: spark plug..the stock heads on 2007 4.6 v8..Denso
2007 Explorer what is best recommended spark plug for 4.6 v8 3 valve, will Champion 7989 fit the stock heads on 2007 4.6 v8. Is the Denso plug a one piece design, reading about bad issues with Autolit… read more
Mat
Mat
Associate Degree
14 satisfied customers
2000 e150 4.6 sohv vin w 98000 miles threw check eng...5+6 miss
Morning. 2000 e150 4.6 sohv vin w 98000 miles threw check eng. scaned 5+6 miss code pulled plugs 5+6 took comp. good replaced plugs miss gone replacd all plugs . 1 week back now 6+7 . Plugs good, 2 ne… read more
Anthony
Anthony
Master Automobile Technician
Vocational, Technical or Trade Scho
8,789 satisfied customers
2004 Ford Freestar: engine light came..misfire from cyl bank..injector
2004 Ford Freestar ran great, 101,000 miles, mint condition, today started hesitating, reduced power, engine light came on and now flashing, P0302, misfire from cyl bank 2, I installed a K & N filter … read more
EMRSR
EMRSR
High School or GED
138 satisfied customers
2000 expedition: eddie bauer..misfire #2, swapped coil #2 with coil #5
2000 expedition 4.6 (vin 6) eddie bauer ed. misfire #2, swapped coil #2 with coil #5, misfire moved to #5. swapped back, replaced coil & boot & all plugs. smooth for 3 days. then #2 misfire again. swa… read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
25,182 satisfied customers
Check engine light..engine light came..Cylinder one was mis firing
My check engine light came on. I took it to an Advance Auto parts store. They put the tester on it and it displayed that Cylinder one was mis firing. Store employee said most likely its an ignition co… read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
25,182 satisfied customers
2004 F150: morning to work truck ran fine first 3 miles..miss
2004 F150 w/a 5.4 w\67,500m. Started out this morning to work truck ran fine first 3 miles then started a dead miss. Continued for another 7 to 8 miles on to work. Turned off the truck and restatred. … read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
25,182 satisfied customers
98 expedition: ran great..knock sensor..coil packs wires..im getting
I have a 98 expedition that i did a engine swap out of last year it ran great for 9 months now i keep getting a cylindar 3 misfire code i replaced the knock sensor a month ago and cylindar head temp t… read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
25,182 satisfied customers
1997 F-150: liter..cylinders..check engine light comes on..runs fine
I have 1997 F-150 4.6 liter. My engine statrs to run rough as if some cylinders are missing and the check engine light comes on. When I turn the engine off and then start it again it runs fine but the… read more
POWERSTROKE
POWERSTROKE
DIESEL MASTER TECH
Associate Degree
1,040 satisfied customers
2004 expedition: hesitation..goes away..K&N intake with cat..coil
Hello I have a 2004 expedition at around 50-60mph I have a small hesitation, it goes away if I acelerate to a higher RPM, there are no engine lights on, all fliuds are normal. I have a K&N intake with… read more
Chris (aka- Moose)
Chris (aka- Moose)
Technician
Vocational, Technical or Trade School
29,223 satisfied customers
2001 Expedition: 000 miles..the #3 spark plug..passenger side..coil
I have a 2001 Expedition, (4.6 trition) with approximately 130,000 miles. About 200 miles ago it spit the #3 spark plug on the passenger side. Of course it broke the coil bracket etc, but no thread da… read more
BOBBYSS
BOBBYSS
TECHNICIAN/ADVISOR
Associate Degree
8,343 satisfied customers
Tapping noise from engine. Sounds like the valves.
Tapping noise from engine. Sounds like the valves. What are my options? I have a 2004 expedition with the 4.6l… read more
Roadside Jerry
Roadside Jerry
Auto Expert on Just Answer
Vocational, Technical or Trade Scho
2,659 satisfied customers
2002 ford expedition: 000 miles..an oil change..service engine light
I have a 2002 ford expedition. It has 120,000 miles on it. I had an oil change 4 days ago and later that day00 my service engine light went on. When I accelerate the engine kind of chugs and the car f… read more
Dennis
Dennis
Senior Master A Technician/Shop Foreman
Vocational, Technical or Trade Scho
758 satisfied customers
Ford: V8..and service engine light came on..misfire..ran fine
I have a ford E150 with V8 a few months ago it started running rough and service engine light came on. I got a PO308 misfire on #8 cylinder and bad crankshaft position sensor code. I replaced #8 spark… read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
25,182 satisfied customers
2003 Expedition: 140K miles..issues about spark plugs..threads
I have a 2003 Expedition with 140K miles on it. I need to change original spark plugs, but after seeing issues about spark plugs being "ejected" I am worried about making the change. I would like to k… read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
25,182 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