How JustAnswer Works:

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

Ask Ironmike Your Own Question

Ironmike
Ironmike, Ford Technician
Category: Ford
Satisfied Customers: 3303
Experience:  30 years ASE Master tech L1 . Ford master
11302663
Type Your Ford Question Here...
Ironmike is online now
A new question is answered every 9 seconds

A code p0354: Coil D primary/secondary circuit malfunction, I

Resolved Question:

I am getting a code p0354: Coil D primary/secondary circuit malfunction, I have worked thru other codes but this one is not an abvious fix for me?
Submitted: 5 years ago.
Category: Ford
Expert:  Super Mechanic replied 5 years ago.
HiCustomer Thank you for asking your question on JustAnswer. The other Experts and I are working on your answer. By the way, it would help us to know:
-What year is your Car?
-What make and model is your Car?
-How many miles are on your Car?
-What type of engine is in your Car?
-What have you already tried?

Thank you again for trusting us with your problem. Please reply as soon as possible so that we can finish answering your question.
Customer: replied 5 years ago.
110, 000 miles, engine misses randomly, but when you push into passing gear it feels like the cylinder fires, but under normal low rpm driving it feels like and vibrates like it's missing. 4.6 liter v8 did the changes I mentioned above. new coil #1, 8 plugs, upstream passenger side o2 sensor those codes went away but now the 354 shows and engine runs as it did before the changes just no engine light now.
Expert:  Super Mechanic replied 5 years ago.
I'm sorry, I was not able to see the make and model on the first pass. Let me refer it to the Ford catagory, as I am not a Ford expert, Thank you for your patience, someone will be along shortly, I'm sure. Again, sorry.
Expert:  Ironmike replied 5 years ago.

Greetings grm1433,

I checked alldata and they show tests(too much to list) for the coil over plug, the wire harness for the coil and the pcm(driver circuit). The symptoms you described go with my experience of a bad coil. I would power balance with the scanner, the misfire would show up under load. They also said to check the spark plug gap on the cylinder that is misfiring. Not uncommon on these engines to have several coils fail or even one after another in short time periods.

Good Luck Mike

If this answer has been helpful please accept

Customer: replied 5 years ago.
I guess my concern is that it used to display a misfire code, now the primary/secondary circuit malfunction on coil D. can you verify which coil is "d"? the previous code was on cylinder 1 which I did change yesterday as well as the plug on #1.
Expert:  Ironmike replied 5 years ago.

Greetings,

I am jumping between two computers in the shop that are shared. Ignition coil D is cylinder #4. I have more information now written down if you need more. I would try the coil.

Good luck

Customer: replied 5 years ago.
I'll replace the coil on #4 to see if we get a different outcome. thanks, XXXXX XXXXX if it doesn't work
Expert:  Ironmike replied 5 years ago.

Greetings,

How did it work out?

Ironmike, Ford Technician
Category: Ford
Satisfied Customers: 3303
Experience: 30 years ASE Master tech L1 . Ford master
Ironmike and 10 other Ford Specialists are ready to help you

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 D USA
< Last | Next >
  • 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 D USA
  • 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. Molly USA
  • 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. BR New 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 P Elm 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. Phil Marysville, CA
 
 
 

Meet The Experts:

 
 
 
  • Ron

    ASE Certified Technician

    Satisfied Customers:

    20942
    23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
< Last | Next >
  • http://ww2.justanswer.com/uploads/FO/fordguy4u/2011-12-17_222940_HPIM1257.64x64.JPG Ron's Avatar

    Ron

    ASE Certified Technician

    Satisfied Customers:

    20942
    23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
  • http://ww2.justanswer.com/uploads/MU/muddyford/2012-6-13_1204_1.64x64.png Chris (aka- Moose)'s Avatar

    Chris (aka- Moose)

    Ford Technician

    Satisfied Customers:

    22382
    16 years experience with Ford.
  • http://ww2.justanswer.com/uploads/JM/jmcdo28/2012-2-23_01655_resized.64x64.jpg John Mc's Avatar

    John Mc

    Ford Technician

    Satisfied Customers:

    5493
    19 years Ford Lincoln Mercury experience
  • http://ww2.justanswer.com/uploads/wmarti7/2009-4-18_04332_Avatar.jpg Chuck's Avatar

    Chuck

    ASE Certified Technician

    Satisfied Customers:

    1684
    33 Years Experience,Ford Senior Master,ASE Master,L1 Advanced Engine Performance
  • http://ww2.justanswer.com/uploads/CR/crzydrvr00/2013-11-3_12123_246347.64x64.jpg Richard's Avatar

    Richard

    ASE Certified Technician

    Satisfied Customers:

    1518
    12 years at a Ford Lincoln/Mercury and Jaguar dealer as a technician and shop foreman.
  • http://ww2.justanswer.com/uploads/BA/baddad1/2014-4-1_23659_avatar.64x64.jpg Mike V.'s Avatar

    Mike V.

    Auto Service Technician

    Satisfied Customers:

    789
    25 years experience on all makes and models, Licensed NYS Inspector.
  • http://ww2.justanswer.com/uploads/lostrider/2009-9-26_23144_php4VNWAA_c1PM1.jpg lostrider's Avatar

    lostrider

    Ford Technician

    Satisfied Customers:

    2940
    ASE Master Technician, Ford Senior Master Technician,Diesel certified, ASE Master, 22 yrs FORD exp.