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 John Mc Your Own Question

John Mc
John Mc, Ford Technician
Category: Ford
Satisfied Customers: 6238
Experience:  19 years Ford Lincoln Mercury experience
7591113
Type Your Ford Question Here...
John Mc is online now
A new question is answered every 9 seconds

2004 ford Taurus: the DPFE sensor keeps melting..converters..egr valve

Resolved Question:

I have a 2004 ford Taurus the DPFE sensor keeps melting. I had the converters replace on the car because they were plugged up. The egr valve appears to be working correctly. Myself and my mechanic are dumb founded to what the problem is. I really need some help on this. The car only has 83000 moles. Thanks Jim
Submitted: 2 years ago.
Category: Ford
Expert:  John Mc replied 2 years ago.

John Mc :

Hi, I am John Mc, a Ford dealer tech. I hope I can help you quickly and accurately. One moment while I work on your problem.

John Mc :

The only thing that causes a dpfe to melt is excessive back pressure. Which cats did you replace?

Customer:

The main big one was replaced and the others dumped out. I also had a trush muffler put on. The system is breathing just fine.

John Mc :

If you have no cats in the fronts this may be why.

John Mc :

Are you worried about the check engine light since you have no cats in the front?

Customer:

We put the computer on it after the light came on and it said not enough pressure in the cats

John Mc :

I think you need to go back with stock cats, all three and this should solve your problem. Since you have eliminated the cats you have changed the flow characteristics of the entire system and this may be what is causing your problem.

Customer:

Let me tell you thecar was doing fine around town for 2 weeks. We drove to oklahoma city which is about 85 mile and it melted on the way back.

John Mc :

Long trip with extended driving with the changes. Since your check engine light is going to stay on anyway I would just plug up the dpfe and not worry about it. It should not effect the way it drive at all.

Customer:

Is there any code we can put in the system to make the check engine light go off?

John Mc :

No, for two reasons, first you don't have cats, next because of the dpfe. All you could do is remove the bulb.

John Mc :

If this answer has been helpful to you please help me by accepting. This is how I receive credit for helping you today!


Also if you need further assistance for this problem after accepting feel free to ask a
follow up and I'll be glad to help.

Thanks,
John Mc



If you need me and it says I am not in chat it is ok. I get a message as soon as you respond so I can come right back.

Customer:

So if we plug the two steel lines off we will be good to go with out any future problems?

John Mc :

Yes it will be fine.

John Mc :

Not exactly the perfect repair, but we do what we must :)

Customer:

I thank you for your quick response to this. It has solved the problem. Have A great day. AQlso the cars fuel milage went up aroud 3 mile to the gallon since we opened up the exhaust system. Car runs great.

John Mc :

Glad to help!!

John Mc :

Any further questions? If not and if I have been helpful please help me by accepting. This is how I receive credit for helping you today.

Thanks,
John Mc

John Mc, Ford Technician
Category: Ford
Satisfied Customers: 6238
Experience: 19 years Ford Lincoln Mercury experience
John Mc and 12 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.