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 mbkenw Your Own Question

mbkenw
mbkenw, Dodge Mechanic
Category: Dodge
Satisfied Customers: 37
Experience:  12 years professional experience in a dealership, Certified Specialist
9910448
Type Your Dodge Question Here...
mbkenw is online now
A new question is answered every 9 seconds

2000 dodge durango: 2 co2 sensors..hoses..basic oil change..dealership

Customer Question

I have a 2000 dodge durango and the problem is ive been milked for alot of money by local michanics because of the check engie lite coming on.One shop replaced 2 co2 sensors,and some kind of power steering sensor,and 2 power steering hoses.another shop got me for the basic oil change,and tells me its blowin black smoke along with unburnt fuel,and thats a dealership programing problem.Alls i no is it is not fireing two cylinders, costing millions in fuel,and has no power and the check eingine lite is still on.i only got 30,000 miles out of it since i bought it last year,which it had 100,000 miles on it when i bought it.Is this problem eaisily fixable for some one who nos what to do or am i just stuck drivin my two kids around in this money pit lemon for as long as it lasts?
Submitted: 6 years ago.
Category: Dodge
Expert:  mbkenw replied 6 years ago.

Hi,Customer welcome to Just Answer. My name isXXXXX will be happy to assist you with your question.

I'm sorry to hear that you have had so much trouble getting your vehicle fixed, and are still having trouble. Unfortunatly, this will likely not be an easy fix. If you are having a dead miss on two cylinders, this is likely what is setting the O2 sensor faults. Under normal conditions, the sensors measure the amount of oxygen leftover after combustion. If there is too much oxygen, the PCM richens (adds fuel) the mixture. If too little, it leans (takes away fuel) the mixture. Under a dead miss condition, along with unburned fuel, lots of extra oxygen is added to the exhaust as well. This results in low voltage from the O2 sensors signaling the PCM that the engine is running lean, so it adds fuel. So not only do the missing cylinders pump out unburned fuel, but as a result, cause the working cylinders to burn even more fuel.

The reason I say it most likely won't be an easy fix is because the early 4.7 liter engines had problems with the valve seats coming out of the head. It can cause the cam followers to pop out as well. Though it's possible that it's something as simple as spark plugs. A compression test should reveal whether or not the seats have dropped. Considering the condition, I would start with a compression test first and go from there. I seriously doubt that it is a programming issue. It may be a good idea to stick some new spark plugs in after doing the compression test. The other possibility is injectors, stuck or plugged. The way I usually verify this is moving ones from the non-firing cylinders to a known good and put the known good injector into the non firing cylinder. If the miss changes to the cylinder that was once working, you know that injector is bad. This test may also work with the spark plugs, if you want to check before just replacing them. But most likely, I would say your problem is internal and mechanical ( the dropped valve seats).

I hope this helps. If you have any further questions or need further information, feel free to ask. There is no need to accept until you are satisfied.

-Ken

Customer: replied 6 years ago.
Thank you thank you thank you any other suggestions than the ones ive been given are worth 9 dollars for sure.Considering the 120 dollars it cost at the gas pump every 50-60 miles. I made an apointment for tomarrow to do the compression check and spark plug replacement at 1:00 if i can figure out how to contact u directly i would b more than eager to let u no the results of the situation,if u r interested!
thank you, XXXXX XXXXX thank you again for your time and expertice opinion.Oh yea my name is XXXXX XXXXX im from Humboldt county California
Expert:  mbkenw replied 6 years ago.

You can post any replies here with more information, it comes directly to me via e-mail. Even after you accept the answer, I can answer any further questions you have without having to open a new question. Just post it here like you just did. I am interested in knowing the results, and helping you as much as I can. Thank you.

-Ken.

P.S. I will be away from my computer until tomorrow afternoon. If you need anything further, you can post it here and I will assist you as soon as I return. Thanks

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:

 
 
 
  • I AM VERY GLAD THAT I TOOK A CHANCE ON YOUR PROBLEM SOLVING SKILLS. I WAS SUCCESSFUL IN REPLACING THE FUEL PUMP. MY TRUCK RUNS LIKE A CLOCK. IT RUNS LIKE THE DAY I BOUGHT IT. NO LUNGING FORWARD, THE TURBO REACTS THE SECOND I STOMP ON THE GAS, AND IT HAS A LOT MORE POWER AND EVEN SOUNDS BETTER TO ME. IT SAVED ABOUT $500.00 BY DOING THE WORK MYSELF. I GIVE YOU ALL THE CREDIT FOR YOUR DIAGNOSING THE PROBLEM, JUST FROM THE SYMPTONS I GAVE YOU OVER THE e MAIL. I WILL USE YOUR WEB SITE AGAIN AND REFER MY FRIENDS. THANKS SO MUCH FOR THE HELP. TOM WHITTAKER USA
< Last | Next >
  • I AM VERY GLAD THAT I TOOK A CHANCE ON YOUR PROBLEM SOLVING SKILLS. I WAS SUCCESSFUL IN REPLACING THE FUEL PUMP. MY TRUCK RUNS LIKE A CLOCK. IT RUNS LIKE THE DAY I BOUGHT IT. NO LUNGING FORWARD, THE TURBO REACTS THE SECOND I STOMP ON THE GAS, AND IT HAS A LOT MORE POWER AND EVEN SOUNDS BETTER TO ME. IT SAVED ABOUT $500.00 BY DOING THE WORK MYSELF. I GIVE YOU ALL THE CREDIT FOR YOUR DIAGNOSING THE PROBLEM, JUST FROM THE SYMPTONS I GAVE YOU OVER THE e MAIL. I WILL USE YOUR WEB SITE AGAIN AND REFER MY FRIENDS. THANKS SO MUCH FOR THE HELP. TOM WHITTAKER USA
  • Just a quick line to tell you how pleased I am to have my brakes working properly after all this time. Your answer was what I needed. I would certainly recommend you highly. God bless! Rev. Jerry Baysinger Holts Summit, Mo
  • I recently asked a question about my 2005 dodge ram, and I just wanted to let my Expert know that he hit the nail squarely on the head with his answer. I wanted to thank him again. Greg Pittsburgh, PA
  • Just a quick line to tell you how pleased I am to have my brakes working properly after all this time. Your answer was what I needed. I would certainly recommend you highly. God bless! Jerry Holts Summit, MO
  • I was skeptical at first but thought I'd give it a try. I was pleasantly surprised. Your site actually is a quality service that I would recommend to others in a heartbeat. Stan Sayre, PA
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
 
 
 

Meet The Experts:

 
 
 
  • Jerry

    Master Mechanic

    Satisfied Customers:

    1227
    ASE Master tech, 30 years exp. troubleshooter, driveability tech
< Last | Next >
  • http://ww2.justanswer.com/uploads/SU/supermechanic/2013-8-23_03546_500.64x64.jpg Jerry's Avatar

    Jerry

    Master Mechanic

    Satisfied Customers:

    1227
    ASE Master tech, 30 years exp. troubleshooter, driveability tech
  • http://ww2.justanswer.com/uploads/MO/MoparCertified/2012-6-7_4142_mechanic.64x64.jpg Mopar Certified's Avatar

    Mopar Certified

    Dodge Technician

    Satisfied Customers:

    5813
    24 Year Chrysler/Dodge Certified Specialist
  • http://ww2.justanswer.com/uploads/jeep10000/2008-9-18_222938_192601.jpg Chris's Avatar

    Chris

    Shop Foreman

    Satisfied Customers:

    4041
    ASE and Chrysler Certified Master Tech
  • http://ww2.justanswer.com/uploads/ke4ich/2009-08-12_212931_DSC02211.JPG moparfl's Avatar

    moparfl

    ASE Certified Technician

    Satisfied Customers:

    3285
    ASE Master Tech Gold level Chrysler Status 30 years dealership exp
  • http://ww2.justanswer.com/uploads/DO/dodgerench/2012-8-1_1142_IMG3173.64x64.JPG Dodgerench's Avatar

    Dodgerench

    ASE Certified Technician

    Satisfied Customers:

    2480
    30+ years Dodge/Chrysler exp., ASE Master with L1 certification. Driveability/ combustion specialist
  • http://ww2.justanswer.com/uploads/RO/rodcuda/2011-7-25_224114_Donhoff1.64x64.JPG Neal's Avatar

    Neal

    Dodge Mechanic

    Satisfied Customers:

    1870
    30 years experience in Dodge Chrysler and Plymouth
  • http://ww2.justanswer.com/uploads/tsmodie/2009-6-10_144056_tim.jpg Tim Mohr's Avatar

    Tim Mohr

    ASE MASTER TECH

    Satisfied Customers:

    1664
    30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL
 
 
 
Chat Now With A Dodge Mechanic
mbkenw
mbkenw
Dodge Mechanic
37 Satisfied Customers
12 years professional experience in a dealership, Certified Specialist