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Ford Expedition 5.4L. My service engine light keeps coming
Ford Expedition 5.4L. My service engine light keeps coming on. The codes say that I am too lean on both banks. I replaced the sensor near the breather but the same codes keep coming up. Otherwise engi… read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
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Ford taurus duratec 3.0 2001. Replaced IAC, TPS, went
Ford taurus duratec 3.0 2001. Replaced IAC, TPS, went through entire system checking horse vacuum leaks and couldn't find any and it still idles high. The only time I can get it to idle normal is if I… read more
A. Penland
A. Penland
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Vocational, Technical or Trade School
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I have 2004 ford 150 4x4 5.4l. I was at the dump and
Hello - I have 2004 ford 150 4x4 5.4l. I was at the dump and when I finished unloading I started the truck and I smelled a little electrical burn smell. I started up and drove off... The chck engine l… read more
Ironmike
Ironmike
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2000 Ford F150 5.4L Vin L We are getting a P0171 and P0174.
2000 Ford F150 5.4L Vin L We are getting a P0171 and P0174. WE have checked all vacuum hoses, we checked for air leaks from the MAF sensor to the PCV. re replaced the pcv valve. We cleaned the MAF sen… read more
Jon D
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F150: Im working on a potential vacuum issue on a 1997 Ford
I'm working on a potential vacuum issue on a 1997 Ford F-150 Lariat Edition w/ 5.4L Triton, 4x4, 165k+ miles. I keep getting codes P0171 and P0174 and the indicated vacuum pressure is around -10 psi a… read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
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Ford Taraus: 2005 Tarsus idles rough while cold. It will almost
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Alex
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I have had a cel light on for a couple years now. when its cold outside, like 28 degrees or below it will start to idle rough & stall when stopped at a light. I have a p0171 & p0174 lean banks 1 & 2 c… read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
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2001 F150: V..6 that has a check engine light..Code reader..cranked
I have a 2001 F150 V-6 that has a check engine light on all the time. Code reader shows error codes P0171 and P0174. When the engine is cranked when cold it races at a higher RPM than it should. When … read more
Pavlin Koev
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2001 f150: maf sensor, the spark plugs..air filter..few miles
My 2001 f150 4x4 with the 5.4L engine has developed an engine miss. I have replace the MAF sensor, the spark plugs and ignition coils and the air filter but am still having the same issue. The MAF cod… read more
Ron
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2000 f350: v..30 seconds..following dtc codes p0171,p0113, p0102
I have a 2000 f350 v-10. The problem I am having is the engine cranks for approximately 30 seconds before starting. I have the following DTC Codes P0171,P0113, P0102, P0174. What is making it so hard … read more
Chuck
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expedition: 22# of vacuum..Idles smooth, but around 2200rpm under load
I have a 03 Expedition 5.4L codes p0172 and p0174 are on. I have 22# XXXXX vacuum at the PCV valve. Idles smooth, but around 2200Rpm under load, It pings, knocks, and backfires. all coils are new. Is … read more
EMRSR
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van..local shop changed mass air flow sensor and gas cap.
I have a E250 van tritonV8. I have a lean code for bank 1&2. local shop changed mass air flow sensor and gas cap. light came back on in about 10 miles. had 02 sensors changed, stayed off for about 150… read more
EMRSR
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2001 Ford F150: V6..wheel drive..cleaner..popping , misfiring
hi I have a 2001 Ford F150 4.2 V6XXXXXgot codes P1401 P0171 and P0174 changed DPFE cleaned MAF sensor with crc contact cleaner new Plugs and wires still hesitates when taking off and sounds like poppi… read more
Chris (aka- Moose)
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2003 ford ranger: flex fuel..a trouble code set po172 rich on bank one
i have 2003 ford ranger with 3.0 liter flex fuel engine and i am getting a trouble code set po172 rich on bank one and bank 2 can you tell me what to do for this… read more
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2001 ford F150: USED SCAN TOOL IT READ PO171 B1 LEAN..CHANGED
2001 ford F150 4X4 5.4L CHECK ENGINE LIGHT ON USED SCAN TOOL IT READ PO171 B1 LEAN AND PO174 B2 LEAN DOES THIS MEAN O2 SENSORS NEED TO BE CHANGED… read more
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1999 explorer: check engine light..code reader..fuel system is to lean
my 1999 explorer 4.0 check engine light is on and my code reader says fuel system is to lean. what should i do… read more
Eric
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What is DTC #P0174 system too lean (Bank no. 2) mean It is ...
What is DTC #P0174 system too lean (Bank no. 2) mean? It is a 1998 Ford F-150, 5.4L, 4X4 Thanks, XXXXX XXXXX [email protected]… read more
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Eric
Retired
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Meet the Experts:

Ron

Ron

ASE Certified Technician

25,022 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.

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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.

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