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99 F350 SuperDually with v10 2150, 99 F350 Super Dually with
99 F350 Super Dually with v10 215k miles. Was running rough, would overheat under mild load, MPG went from 10 to 7, had a ping during acceleration. Then the sparkplug in the no. 4 cylinder blew out. ODBII reader showed P1401, P0171, P0300, P0307, and P0174. I fixed the spark plug using a heli coil. I replaced the thermostat and flushed the radiator, replaced the spark plugs, coils, fuel and air filters, and fuel injectors. ODBII reader showed P1401, P0171, and P0174. Replaced the DPFE sensor, and the hoses going to the DPEF, EGR valve, fuel pressure regulator, and MAF sensor.. I took a full can of break cleaner and emptied it by spraying every connection and seam in the engine compartment no apparent vacuum leaks. The MPG went up to 11. ODBII reader showed P0455, P0171, and P0174 Replaced 3 oxygen sensors (single CAT and exhausts), fuel pump (fuel gage did not work anyway), fuel cap, both rubber hoses connected to the fuel tank (looks like evap lines), and 3 rubber hoses that connect the solid lines on the frame to the engine (looks like evap lines). ODBII reader showed P0455, P0171, and P0174. I have checked and cleared the OBDII several times during this process. ODBII reader still reads P0455, P0171, and P0174. I have used 2 tanks of gas during this trouble shooting process. I am at a loss what to do next about the lean codes. … read more
Mike S.
Mike S.
Vocational, Technical or Trade Scho
8,061 satisfied customers
5 speed stalls at low speed. Light is on, vacuum lines
light is on, vacuum lines removed previously, while driving … read more
Roy
Roy
shop foreman
Associate Degree
4,528 satisfied customers
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
Ford Senior Master Technician
Vocational, Technical or Trade School
7,139 satisfied customers
Ford f250 V10 6.8L: 2010 Ford F250 V10 6.8LWill go to 40%
2010 Ford F250 V10 6.8L Will go to 40% throttle then the rpm dies down and she wont take her fuel If i let go of fuel a bit she comes back to life. If i slowly accelerate she can do 120 no problem.If … read more
Expert
Expert
2000 ford ranger 3.0 v6 flex fuel: replaced all 6 fuel injectors.
2000 ford ranger 3.0 v6 flex fuel: replaced all 6 fuel injectors. After start up codes p0171 and p0174 flagged. Found that the parts store sold me fuel injectors for the regular gas ranger 3.0. The co… read more
Lou P. master tech
Lou P. master tech
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Bachelor's Degree
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2002 Ford Explorer: service engine soon..a P0174 code..MAF sensor
I have a 2002 Ford Explorer, I recently received a service engine soon light and had a PO171 and a P0174 code, which is clean or replace MAF sensor. I did that and the light comes back on. Could it be… read more
Kenny Z.
Kenny Z.
Ford Senior Master Technician
High School or GED
6,098 satisfied customers
2003 ford expedition: 0.78%o2 Sensor voltage..popping..fuel filters
Only p0171 diagnostic code on a 2003 ford expedition. code P0174 is NOT present. Vehicle is running well. No hissing sounds, no engine hessitation nor stalling. I have current readings: Bank1 Long ter… read more
Auto Go
Auto Go
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845 satisfied customers
2004 ford f150: driving the temp gauge and my a/c quit working
i have a 2004 ford f150 5.4 and while i was driving the temp gauge and my a/c quit working just wondering what it could be?… read more
Cardoctor71
Cardoctor71
Retired Master Certified Technician
High school graduate
669 satisfied customers
2002 FORD WINDSTAR: WHAT DOES ENGINE CODE p0161..p0174
WHAT DOES ENGINE CODE P0161 AND P0174 ON MY 2002 FORD WINDSTAR MEAN? WHAT STEPS DO I NEED TO TAKE TO REPAIR IT?… read more
JOHN aka Eauto
JOHN aka Eauto
self employed
High School or GED
10,909 satisfied customers
2002 Ford Windstar: scanner tells me = System too lean bank..slow
I have a 2002 Ford Windstar with the light on. My scanner tells me = System too lean bank #2. System too lean,bank #1 HEGO sensor too slow,bank #1 Hego sensor unable to switch,bank #1 How do I fix the… read more
Richard
Richard
ASE Certified Technician
Vocational, Technical or Trade Scho
1,524 satisfied customers
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
EMRSR
High School or GED
3,002 satisfied customers
97 Ranger: 4.0 liter..130k miles failed smog recently..2500 rpm
My 97 Ranger 4.0 liter with 130k miles failed smog recently. High HC & CO at idle; fine at 2500 rpm. No CEL, seems to run OK. Used scanner to read codes and PID's; one pending DTC: P0170. Short term f… read more
kevin
kevin
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Vocational, Technical or Trade Scho
350 satisfied customers
The check engine light comes on..auto parts store..meter
the check engine light comes on. had auto parts store put it on the computer and it showed the fuel air meter and the bank 2 sensor 1 is out will replacing these two parts fix the problem or should th… read more
Don
Don
Shop Forman, lead tech
Vocational, Technical or Trade Scho
986 satisfied customers
2001 ford windstar: tune..ox sensor ing coil and flushed..lean
I habve a 2001 ford windstar just had tune up changed all ox sensor ing coil and flushed out the system three times still get a reading of running to lean what could be the problem… read more
Richard
Richard
ASE Certified Technician
Vocational, Technical or Trade Scho
1,524 satisfied customers
1999 f250: with a v10 has the service engine soon light..jumped..p0171
my 1999 f250 sd with a v10 has the service engine soon light on staedy. also the idle has jumped up to about 1500 rpm. i had the codes read, codes were p0171 and p0174, both banks running lean. what s… read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
25,182 satisfied customers
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
jack duppel
jack duppel
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Vocational, Technical or Trade Scho
230 satisfied customers
Ford Explorer - Code PO171 and PO174 Check Engine Soon
My 1999 Ford Explorer is saying check engine soon with Code PO171 and PO174. I tried computer coding at advance store but that didn't help. Any ideas?… read more
jack duppel
jack duppel
Co-Owner
Vocational, Technical or Trade Scho
230 satisfied customers
2001 Ford Expedition: first start..normaly..shaking for misfiring
My 2001 Ford Expedition 5.4 sometimes it starts shaking when I first start the car, but then I run it for 5 minutes and the shaking stops and run normaly. what is causing the shaking for misfiring.… read more
Chris (aka- Moose)
Chris (aka- Moose)
Technician
Vocational, Technical or Trade School
29,223 satisfied customers
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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.

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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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