P0171 and p0174

Mikeq89
0

Asked by Mikeq89 Jul 13, 2014 at 04:29 AM about the 2001 Ford Expedition Eddie Bauer

Question type: Maintenance & Repair

Hi I can't seem to find the problem I
did the flowing:

2 Answers

FordNut
24,365

.Both banks too lean ....http://engine-codes.com/p0171_ford.html .....and http://engine-codes.com/p0174_ford.html ..usually the MAF dirty of failed Or a vacuum leak. See http://www.smogtips.com/smog-question/1018/What-causes-Trouble-Code-P0171-and-P0174-Ford-Expedition

2 out of 2 people think this is helpful.
FordNut
24,365

There is another article at: http://troubleshootmyvehicle.com/ford/4.6L-5.4L/troubleshooting-p0171-and-p0174-page-1 ..... that may help too

2 out of 2 people think this is helpful.

Your Answer

Add photo

Related Questions

  • 01 expy 5.4 p0171 p0301 runs rough 6 answers

    Last week our 2001 expedition started running rough during a rain storm. We took it home and parked it for a couple days to let it dry out. Still ran rough after drying but now had a check engine l...

    2001 Ford Expedition XLT 4WD

    -

    Maintenance & Repair

  • 2001 ford expedition 125k miles P0171 and p0174 8 answers

    Can't find the problem •I replace the pcv hose •Clean the mass air flow •Replace the fuel filter (old one wasn't bad) •Sprayed the whole car with carb cleanner and nothing •Replace the throttle...

    2001 Ford Expedition

    -

    Maintenance & Repair

  • i have a 1999 ford ranger 4.0l 4x4 with p0171 and p0174? 6 answers

    I have p0171 and p0174 codes, I have replaced the upstream o2 sensors, fuel filler neck, mass air flow sensor, ect temp sensor and I still have the check engine light come on! I am running out of ide...

    1999 Ford Ranger XLT Extended Cab Stepside SB

    -

    Maintenance & Repair

  • Does my 2001 Windstar have both upstream and downstream o2 sensors? 3 answers

    I have cleaned the EGR valve, still get vacuum at the EGR solenoid, threw p0171 and p0174.

    2001 Ford Windstar SEL

    -

    Maintenance & Repair

  • P0171, P0174 check engine codes - possible electrical problem? 21 answers

    I have a 1999 Ford Windstar 3.8L with the check engine light on and reading codes p0171 & p0174. after a bachelors degree worth of research I have taken many steps to troubleshoot and fix the pro...

    1999 Ford Windstar 3 Dr STD Passenger Van

    -

    Maintenance & Repair

Expedition
Looking for a Used Expedition in your area?
CarGurus has 17,108 nationwide Expedition listings starting at $525.
ZIP:

Search Ford Expedition Questions

Ford Expedition Experts

#1 lightGear
lightGear
Reputation 770
#2 kbro
kbro
Reputation 530
#3 oldtimer37
oldtimer37
Reputation 390
View All

Related Models For Sale

Used Toyota Sequoia"
89 Great Deals out of 3,791 listings starting at $3,583
Used Chevrolet Tahoe"
553 Great Deals out of 25,207 listings starting at $1,750

Used Cars For Sale

2015 Ford Expedition For Sale
5,282 listings starting at $33,990
2014 Ford Expedition For Sale
41 Great Deals out of 2,151 listings starting at $25,950
2013 Ford Expedition For Sale
35 Great Deals out of 616 listings starting at $21,995
2012 Ford Expedition For Sale
30 Great Deals out of 787 listings starting at $14,997
2011 Ford Expedition For Sale
48 Great Deals out of 962 listings starting at $14,995