Ford

Have Ford Questions? Ask a Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Ford

New problem with my 2000 Ford Taurus 3.0L 24 DOHC after having the oil pan gasket replaced

Customer Question
. Two days after the...
New problem with my 2000 Ford Taurus 3.0L 24 DOHC after having the oil pan gasket replaced . Two days after the completed repair I noticed the "check engine light" on. Had it scanned for fault codes and revealed a 171 & 173 left and right bank lean fault. Any reasonable idea as to whether or not the mechanic had anything to do with the change? The car previously was running fine. just a slight oil leak. 112,000 mi and fully maintained over the years. It has started running rough at idle and actually has died while sitting at a stop light. It is getting worse but I am not sure I want to take it back to the mechanic that did the work.
Submitted: 6 years ago.Category: Ford
Show More
Show Less
Ask Your Own Ford Question
Answered in 2 minutes by:
6/16/2011
Ford Mechanic: john -aka eauto, The Car Guy replied 6 years ago
john -aka eauto
john -aka eauto, The Car Guy
Category: Ford
Satisfied Customers: 16,563
Experience: ase tech over 15 years in the field
Verified
Hi I will do my best to answer your question fast and accurate using the info you have provided. Thanks for visiting Just Answer.
john aka eauto #1 cause for lean codes is a vacum leak..start at the air filter make sure its sealed correctly . Check for any loose connections and hoses to the motor..start there
Ask Your Own Ford Question
Customer reply replied 6 years ago
You are going to have to do better than that for a response before I "accept".
Ford Mechanic: john -aka eauto, The Car Guy replied 6 years ago

it can also be caused by a o2 snsor issue....The exhaust crossover needs to be removed to do a oil pan...I would have your mechanic verify that all o2 sensors are plugged in and that he installed the air box assembly corectly

....I know you think you're asking a simple question, but "lean" and "rich" codes have the longest possible causes list of ANY of the fault codes.

The conditions under which it is lean can be used to steer the diagnostic direction. When those codes set, there was also some "freeze frame" data that went with one of them. Now, maybe the tool being used won't show it to you, depending on the quality of the tool. But that FF data is helpful.

A lean condition at idle only, and not higher RPMs is a possible indication of a vacuum leak.

A lean condition at higher RPMs but not at idle is an indication of a fuel delivery problem like pump and filter.

A lean condition at idle that suddenly swings to a rich condition at higher RPMs is an indication of a contaminated MAF sensor.

However, it it extremely common for the plastic upper intake seals to leak vacuum. It is also very common for the IMRC shaft seals in the lower intake to leak vacuum. The upper seals aren't that big of a deal, but the IMRC shaft seals in the lower require a complete new lower intake manifold (the actual aluminum manifold) to correct.

Ford also has a reprogramming (reflash) that helps. Often, a new set of upper seals plus the reflash will "hide" the IMRC shaft seal leakage. But eventually the lower manifold gets do worn out that the reflash won't hide it and you'll need a new lower intake manifold.

That is just one common issue may not be your problem. You will need to take the vehicle to a shop that can monitor fuel trim PIDs on the scan tool. They can spray the intake seals and watch the reaction in the trim PIDs to determine any vacuum leak.

Another common issue is when someone replaces the air filter, and the plastic PCV hose pulls out of the snorkel on the back side (nearest the master cylinder)... that causes a lean code at idle due to unmetered air entering the engine.

I'd check that PCV hose first and if that is ok, take it to a shop. Also, the PCV hose that goes to the PCV valve (in front).... make sure oil hasn't gotten to the rubber part where it slides onto the intake, swollen it and causing it to leak vacuum. Those are a couple of DIY'r repairs I can think of... the rest really need a tech with proper test equipment to figure out.

Ask Your Own Ford Question
Customer reply replied 6 years ago
I am not interested in all of the "what-if" scenarios road you are trying to take me down. I am not satisfied with your response and wish to end this conversation seeking an alternative Just answer rep.
Ask john -aka eauto Your Own Question
john -aka eauto
john -aka eauto
john -aka eauto, The Car Guy
Category: Ford
Satisfied Customers: 16,563
16,563 Satisfied Customers
Experience: ase tech over 15 years in the field

john -aka eauto 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

24,155 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

27,937 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.

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.

Mike V.

Mike V.

Auto Service Technician

1,335 satisfied customers

25 years experience on all makes and models, Licensed NYS Inspector.

< Previous | Next >

Related Ford Questions
Have a 2000 Ford Taurus 3.0 24 valve engine with 49,000
HI - have a 2000 Ford Taurus 3.0 24 valve engine with 49,000 miles - problem is when a/c is turned on blows HOT AIR only no matter what the temp is set at(digital temp switch), all selections floor, d… read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
24,155 satisfied customers
Why hole on my intake manifold on 2003 tauraus 3.0L. Taurus.
why hole on my intake manifold on 2003 tauraus 3.0L … read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
4,017 satisfied customers
Have a 2012 ford Taurus trying to synce phone but not
have a 2012 ford Taurus trying to synce phone but not working … read more
Eric
Eric
Auto Technician
589 satisfied customers
Is a ford Taurus 2005. Sometimes start, the starting is
Is a ford Taurus 2005. Sometimes start, the starting is doing the job, it crank but don't start. Looks like there is no gas in the cylinders … read more
Chris (aka- Moose)
Chris (aka- Moose)
Technician
Vocational, Technical or Trade School
27,937 satisfied customers
I have a 2000 Ford Taurus SE wagon with basic 3.0 l engine.
I have a 2000 Ford Taurus SE wagon with basic 3.0 l engine. All of a sudden when turning right, it feels like there is no power steering - turning left feels fine as though the power steering is worki… read more
karrs2fix
karrs2fix
Master auto technician
Vocational, Technical or Trade Scho
548 satisfied customers
2002 Ford Taurus will not start. I replaced the battery that
2002 Ford Taurus will not start. I replaced the battery that didn't do. it. Then I notice the anti theft light blinking. is this why it won't start? … read more
rpmdiag
rpmdiag
High school
7,117 satisfied customers
What is the exhaust volume of a police ford explorer engine
What is the exhaust volume of a police ford explorer engine per minute at the usual 600 rpm idle speed? … read more
Chris (aka- Moose)
Chris (aka- Moose)
Technician
Vocational, Technical or Trade School
27,937 satisfied customers
I have a ford Taurus 2000...The problem is the windshield
I have a ford Taurus 2000...The problem is the windshield turns on intermittently...And I looked for the owners manual to locate the fuse.... Can you please tell me the location of the fuse box....and… read more
eric remington
eric remington
FORMER SHOP OWNER/TECHNICIAN/INSPECTOR
associates degree
290 satisfied customers
What is the torque pattern and torque amount for the exhaust
What is the torque pattern and torque amount for the exhaust manifold bolts on a 2003 Ranger 2.3 L engine? … read more
Dan
Dan
Automotive Technician
Vocational, Technical or Trade Scho
25 satisfied customers
I have a 2008 ford taurus with a transmission issue, the
I have a 2008 ford taurus with a transmission issue, the first to second gear it shifts really hard. The fuild level is good and new with no leaks. Would this be the control assembly that is mounted o… read more
Gunvir Singh
Gunvir Singh
1,712 satisfied customers
2013 Taurus, 90k miles, original disk brakes. is there a
2013 Taurus, 90k miles, original disk brakes. is there a trip to removing the top 2 bolts on the calipers? When using 13mm socket the turn but will not come out … read more
APenland
APenland
Ford Senior Master Technician
Associate in Industrial Management
3,186 satisfied customers
The 3.5L V6 engine of my 2008 Ford Taurus Limited rattles
The 3.5L V6 engine of my 2008 Ford Taurus Limited rattles when it starts up after sitting overnight. … read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
4,017 satisfied customers
Ford 2005 Taurus SE Engine light on code pulled PO174 but 1
Ford 2005 Taurus SE Engine light on code pulled PO174 but 1 year ago mechanic said to show Ford this number TSB - 06 - 20 - 10 is that a recall on this but its old an expired. … read more
Gunvir Singh
Gunvir Singh
1,712 satisfied customers
I have a 1995 Ford Taurus with a 3.0 Vulcan engine with a
I have a 1995 Ford Taurus with a 3.0 Vulcan engine with a distributor. It has 145,000 miles, the oil and filters were changed regularly. What would cause the cam shaft to break ?… read more
Jaybird61
Jaybird61
Master Automotive Mechanic
1,913 satisfied customers
I have a 2002 Ford Taurus SE. I'm getting a solid engine
I have a 2002 Ford Taurus SE. I'm getting a solid engine light and a rough idle. Seems to accelerate alright but is rough. At times I get a blinking engine light, loss of power, rough idle and air con… read more
Gunvir Singh
Gunvir Singh
1,712 satisfied customers
2000 Taurus 3.0 DOHC starred and ran good until engine got
2000 Taurus 3.0 DOHC starred and ran good until engine got to operating temp. This is when it began to run rough and finally died. Now it will crank but not start. … read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
24,155 satisfied customers
I have a 2010 Ford Taurus and the wrench and check engine
I have a 2010 Ford Taurus and the wrench and check engine light comes on. Then the cars accerlates. After being stopped the caract like it is not getting gas … read more
Gunvir Singh
Gunvir Singh
1,712 satisfied customers
2001 Ford Taurus SES 3.0 Vulcan exhaust leak suspect front
2001 Ford Taurus SES 3.0 Vulcan exhaust leak suspect front muffler under manifold can't really confirm. Symptoms car when started idles with a clear sound of exhaust leak has no power stumbles on acce… read more
Chris (aka- Moose)
Chris (aka- Moose)
Technician
Vocational, Technical or Trade School
27,937 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