Ford

Have Ford questions? Ask a mechanic for answers ASAP

Ask an Expert,
Get an Answer ASAP!

Expedition: My 1999 Ford Expedition is running rough. I have…

Customer Question
My 1999 Ford Expedition is...
My 1999 Ford Expedition is running rough. I have replaced a coil pack, plugs, wires, fuel pump and filter. the codes that came up with the last scan arePO301, PO351, PO352, PO1405, PO171, PO174, PO304 and PO306
Submitted: 3 years ago.Category: Ford
Show More
Show Less
Ask Your Own Ford Question
Answered in 37 minutes by:
5/29/2015
Ford Mechanic: Wayne Crawford, Shop Owner replied 3 years ago
Wayne Crawford
Wayne Crawford, Shop Owner
Category: Ford
Satisfied Customers: 4,151
Experience: General Repair Shop Owner
Verified
Hello. My name is ***** ***** I will be helping you today.Which coil did you replace?Have you checked for vacuum leaks?Do you have a scan tool with live data?
Ask Your Own Ford Question
Customer reply replied 3 years ago
I replaced the coil on the passenger side of motor that controls the cylinders in question. I replaced the boot on the pcv hose as it was bad and I just cleaned the wires on the MAF sensor and it seemed to help. The code I received after doing this is PO300 random misfire.Yes I have an innova 3100e scan tool.
Ford Mechanic: Wayne Crawford, Shop Owner replied 3 years ago
What are your long term and short term fuel trims?
Ask Your Own Ford Question
Customer reply replied 3 years ago
Stft. B1. -3.13 Ltft B1. 19.53
Stft. B2. -1.56. Ltft. B2. 17.19
Ford Mechanic: Wayne Crawford, Shop Owner replied 3 years ago
Spray some brake cleaner around the base of the instake while watching the STFT on both banks. If they go full lean you need intake gaskets which I suspect you do.
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 Wayne Crawford Your Own Question
Wayne Crawford
Wayne Crawford
Wayne Crawford, Shop Owner
Category: Ford
Satisfied Customers: 4,151
4,151 Satisfied Customers
Experience: General Repair Shop Owner

Wayne Crawford 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
On a 06 Ford Ranger could the coil cause rough idle And has
On a 06 Ford Ranger could the coil cause rough idle And has these codes C1148 C1158 PO300 PO305 PO304 PO306 PO316Is there something else I should check?… read more
APenland
APenland
Ford Senior Master Technician
Associate in Industrial Management
3,186 satisfied customers
2007 Ford Edge. After pass car began to run rough, engine
2007 Ford Edge. After pass car began to run rough, engine light came on. Extradited trouble code got codes PO351 & PO352. Changed 3 back plugs. Know code yet cylinder 4 coil had exploded. Used coil fr… read more
Dan
Dan
Automotive Technician
Vocational, Technical or Trade Scho
25 satisfied customers
I have a 2007 f150, 5.4 3v with 94000 miles that is running
I have a 2007 f150, 5.4 3v with 94000 miles that is running rough, it has PO300, PO302, PO303, PO304, PO308 confirmed codes and PO300, PO301, PO302, PO303, PO304, PO308, PO351, PO352 pending codes. I … read more
APenland
APenland
Ford Senior Master Technician
Associate in Industrial Management
3,186 satisfied customers
Until my 5.4L engine warms up it runs rough and throws a
Until my 5.4L engine warms up it runs rough and throws a PO171 OR PO174 (bank 1 or 2 lean) codes or PO302 or PO305 OR PO306 misfire code. The misfiring cylinder is different each time. … read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
1999 ford ranger 3.0 I have a PO 171-PO174 PO303-PO304-PO305
1999 ford ranger 3.0 I have a PO 171-PO174 PO303-PO304-PO305 code. Fuel pressure is 54 psi with engine running. wires and plugs and coil are check out good. Is this furl pressure to low? And if so wou… read more
eauto
eauto
self employed
High School or GED
74 satisfied customers
ok ford mechanics got one have a 1998 ford explorer
ok ford mechanics got one for ya have a 1998 ford explorer 4.0 sohc eng. light on ran the first scan came up with these codes p0306,po171,p1174 replaced the cam sensor cleared everything drove around … read more
APenland
APenland
Ford Senior Master Technician
Associate in Industrial Management
3,186 satisfied customers
2005 ford escape: It stalls an runs rough...new coils..fuel filter
I have 2005 ford escape. It stalls an runs rough. I put all new coils, fuel pump, fuel filter, plus, an throttle position sensor in. I still get po193, po351, po352, po353, & po354.… read more
Repair1014U
Repair1014U
Recently Retired
Vocational, Technical or Trade Scho
451 satisfied customers
2001 mustang: v6..running fine..coil,pcv, checked fuel filter
please help!! 2001 mustang-v6-3.8- running fine-suddenly started missing and jerks. replaced spark plugs,plug wires,coil,pcv, checked fuel filter, used gas treatment,1 ground wire to PCM, PCM-flashed/… read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
25,182 satisfied customers
2003 ford expedition: 4.6 liter..po171..lean..mixture..oxygen sensors
I have 2003 ford expedition 4.6 liter; getting po171 and po174 lean mixture. I have replaced air mass sensor and about year ago replaced oxygen sensors. I have physically checked all hoses and didn't … read more
davehop
davehop
Diagnostic Technician
Ford Master Certified Technician
1,171 satisfied customers
1999 windstar: codes are po401, po171, po174, po304..wrong with my van
I have these problems with my 1999 windstar the codes are po401, po171, po174, po304, and po306 could tell me what these mean. and what is wrong with my van, and how would cost to fix all of this? tha… read more
eauto
eauto
self employed
High School or GED
74 satisfied customers
2003 Expedition: stalled..Ignition coil..the ECM or the coil pack
I have a 2003 Expedition that stalled while ideling, I checked for codes and the only one is a PO353 Ignition coil C, is this a problem with the ECM or the coil pack?… read more
RICHE
RICHE
TEAM LEADER AND SENIOR MASTER TECHNICIAN
Associate Degree
266 satisfied customers
1997 ford explorer: the injectors the fuel filter..leaks..maf sensor
my 1997 ford exploer has po171 po174 po301 po304 i have replaced the injectors the fuel filter checked for vaccum leaks did not find any checked the maf sensor readings with a multi meter it seams to … read more
Bamaman39
Bamaman39
Ford master diesel Tech.Ford certified
High School or GED
2,154 satisfied customers
1999 Ford Expedition: V..8 (5.4) 2 wheel drive..check engine light
I have a 1999 Ford Expedition V-8 (5.4)XXXXX The trouble codes are PO171, PO174 and PO401 were found during a code scan. The check engine light is on. When the vehicle is Stationary (idling) it runs v… read more
davehop
davehop
Diagnostic Technician
Ford Master Certified Technician
1,171 satisfied customers
FORD RANGER: CYL..ENGINE LIGHT CAME..POSSIBLE FOULED INJECTOR
FORD RANGER,2002,6 CYL 3.0 ENGINE,69,000 MILES, ALWAYS HAS REGULAR 3-4000 MILE OIL/FILTER CHANGE. CHECK ENGINE LIGHT CAME ON. AUTO ZONES CODE READER SHOWED RICH/LEAN FUEL RATIO, #4 CYLINDER MISFIRE, P… read more
eauto
eauto
self employed
High School or GED
74 satisfied customers
1999 Lincoln Navigator: MIL..PO171..Replaced Fuel filter..MAF sensor
I have a 1999 Lincoln Navigator with a MIL on. Diagnostic codes PO174 and PO171. Replaced Fuel filter and MAF sensor and then only PO174 came up. Replaced O2 sensor on bank 2 (drivers side). Nothing c… read more
FORDFXR
FORDFXR
MASTER TECHNICIAN
Vocational, Technical or Trade Scho
138 satisfied customers
96 Ranger: 3.0L..runs rough..Diagnostics show problem with #3 cylinder
96 Ranger 3.0L runs rough and engine light is on. Diagnostics show problem with #3 cylinder and sometimes #4. Have repeatedly changed spark plugs and/or harnesses which helps for a bit, but problem al… read more
breakaway500
breakaway500
Auto repair shop owner/operator
High School or GED
473 satisfied customers
I have a 01 SPORT TRAC runs good with no truble..check Engine..TUNE
I have a 01 SPORT TRAC runs good with no truble but MY check Engine litht is reading CODES P1504-P1506-P1409-PO301-PO302-PO303-PO304-PO305 and PO171-PO174 HAD TUNE DONE… read more
j_ramsey
j_ramsey
High School or GED
480 satisfied customers
ford windstar: van..engine light came on..code reader..Ignition coil
I have a ford windstar 3.0l the van started to run rough and the engine light came on. I rented a code reader and got code po352. I replaced the Ignition coil. I then started the van and it blew up. I… read more
Larry
Larry
Technical Editor
Bachelor's Degree
718 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