Question about 2005 Ford Expedition

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2005 Expedition where is the MAF sensor?

Aslo where are the O2 sensors

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  • 155 Answers

The MAF sensor is on the air filter housing. It will have a connector that has 5 wires going to it. The oxygen sensors are on the exhaust system

Posted on Dec 06, 2012

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Posted on Jan 02, 2017

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SOURCE: Oxygen Sensor Location 2001 Ford Expedition Eddie Bauer

There are four o2 sensors on this truck. one on each side just below the exhaust manifold, and one on each side behind the second catalytic converters. (just about even with the back of the front doors.

Posted on Jun 18, 2008

tripletauto
  • 1450 Answers

SOURCE: 2000 Ford F450 with V10

have you cleaned the throttle plate? this is done by removing air intake hose and spraying out with cleaner and wiping it down open throttle and wipe off the butterfly and bore. this will usually cure a stumble.

Posted on Aug 20, 2008

  • 1 Answer

SOURCE: location of O2 sensor in bank 2, 99 5.4 expedition, running lean

I have a ford 2003 windstar that was running very rough when cold and almost stalling. engine light came on. went to autozone and they read the codes for free and told me it was running lean on Bank 2 also. i came home searched for the O2 front sensors online using the info autozone gave me. there are 2 front sensors on my car that need to be replaced at the same time. look for ones that have a direct plug in and don't need wire splicing. the ones without the wiring harness are cheaper but more of a pain, i think.
they were fairly easy to replace. getting access with the wrench was the worst. reset the light by disconnecting the battery for a few minutes. seems fine now and the light hasn't come back on.

Posted on Jan 25, 2009

  • 14036 Answers

SOURCE: getting a code po171 on a '98 ford expedition...O2

CODE PO171 -SYSTEM ADAPTIVE FUEL TOO LEAN. POSSIBLE CAUSE.AIR LEAKS AFTER THE MAF SENSOR OR LEAKS IN THE PVC SYSTEM. EXHAUST LEAKS BEFORE OR NEAR WHERE THE HO2S IS MOUNTED. FUEL INJECTORS RESTRICTED OR NOT SUPPLYING ENOUGH FUEL. FUEL PUMP WEAK. LEAKING EGR VALVE GASKET OR DIAPHRAGM.MAF SENSOR DIRTY CAUSES PCM TO UNDERESTIMATE AIR FLOW / NOW THE BANK 1 SENSOR ITS MOUNTED IN THE EXHAUST SYSTEM BEFORE THE CATALYTIC CONVERTER.THE BANK 2 SENSOR IS IN EXHAUST AFTER THE CATALYTIC CONVERTER.

Posted on Aug 27, 2009

fingaz22
  • 1068 Answers

SOURCE: My 2004 Ford Expedition 4.6l has a rough idle and

well i'm sorry that you got the miss information here on fixya. because all internal combustion engines need a pcv valve to operate properly.

now the information you got first is correct and pcv valve can set false codes like o2's and lean bank conditions also can cause you vechile to run or idle rough.

no there are a few different styles pcv valves and some times don't look like your convetional pcv. some are heated in different ways either by coolant ( witch look like a conventioanl pcv but with a coolant tube around them) then electricaly heated and they don't look like them at all. but one thing that has to stay the same is the pcv valve has to ventilate the crank case and will be found somewhere on or near the valve cover because it is the easiest and most accessible point of the engines crank case area. so i would look for that and usally on that vechile it is on the passanger side valve cover in the middle.

with that said and seeing you did all those repairs i would go right for that as my next step. but there is other thing that cold cause this issue like leaky injectors and is almost more likely becuase of the o2 sensor code and backfire. do you have the code # so i can look it up and best assist you?

see vechiles are hard to fix over the computer as i am trying so if you have any more question/info about this issue please ask and i will be glad to help.

Posted on Sep 22, 2009

Testimonial: "Cool thanks, i'll check the pcv valve/ line going into the back of the intake, if that doesn't work i'll go for the codes again....thanks again...."

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O2 sensor wiring diagram 2005 ford expedition


http://www.bbbind.com/technical.html
Free wiring diagrams & TSB's-all makes and models. Your 4 O2 sensors are shown under System: engine, Subsystem: fuel controls.

Dec 23, 2013 | Ford Expedition Cars & Trucks

1 Answer

Codes po122 po155 po135 po102


code po122 is for your throttle position sensor. po155 is for your down stream o2 senor .po135 is for your bank 1 sensor 1 o2 sensor. po102 is for your maf sensor

Dec 19, 2012 | 2000 Ford Expedition

1 Answer

Acts like it is not getting enough fuel when going up hills. have replaced fuel filter but still having trouble. 2000 Ford Expedition 5.4l engine


Fuel is controlled by the O2 Sensors
Where they replaced at 100,000 miles?

Check fuel pressure on engine fuel rail,
with a gauge

Clean MAF Sensor

Check/Test TPS Sensor

Aug 05, 2011 | 2000 Ford Expedition

1 Answer

I have a 1997 ford expedition 5.4 L with the check engine codes of PO153 and PO133 coming on.... the truck stalls and jumps need to know what part to replace or how many i need?


PO -133 O2 Sensor Slow Response

Po -- 153 same thing


Check for vacuum leaks --every where

Clean MAF Sensor -CRC MAF Cleaner

Replace the 2 --front O2 Sensors, if over
100,000 miles on them The ones closest to motor

Use the OEM Type not the cut & splice
universal junk

NAPA can order them
Should be Bosch or NGK

Codes do not tell you anything about what is wrong
or what to replace.

Jun 11, 2011 | 1997 Ford Expedition

1 Answer

How to adjust the idle on 2006 ford expedition


Computer does that

Clean throttle plate-CRC Throttle Body Cleaner
Clean MAF Sensor-CRC MAF Cleaner
Install new spark plugs--70,000 miles- Champion 7989 one piece plug
New O2 Sensors-100,000 miles,front 2
only,closest to engine

Mar 09, 2011 | Ford Expedition Cars & Trucks

1 Answer

I have a 2006 Expedition that acts like it is starving for fuel whenever it changes gears. But when you get on it really hard it does not act the same way. Any suggestions?


Clean the MAF Sensor--CRC MAF Cleaner

TEST--TPS Sensor-with an oscilloscope,
need repair shop for that

Test Fuel Pressure- at rail

O2 Sensors--change front 2-ones closest to engine
at 100,000 miles

Mar 09, 2011 | 2006 Ford Expedition

1 Answer

2001 ford expedition i went to the mechanic and told me that code po171 need to be corrected


P0171 : Means system too lean (bank1)

And your O2 sensor or MAF sensor can cause this or any vacuum leak, like the PCV valve. You may wanna check all the above and see if there is any faulty sensor or Vacuum leak. Good luck

Dec 18, 2010 | 1998 Ford Expedition

2 Answers

I have a 1998 Ford Expedition 5.4l, engine has an intermitent miss-fire and hesitation after reaching operating temperture. I have no CEL or stored codes. This problem is much worse when the A/C is on. I...


Your good
I would still remember, that all ford COP Coils have issues,from 1998 thru today
The Coolant Temp Sensor, should put it into closed loop, after it warms up---then the O2 Sensors can do their thing. That's one item
O2 Sensors slow to swing--maybe,need to test
Converter partially blocked-a bit of a stretch, but don't rule out.
I would buy one new coil, and walk it down from cyl to cyl,tough on that engine,but I put my money there

Oct 02, 2010 | 1998 Ford Expedition

1 Answer

Getting a code po171 on a '98 ford expedition...O2 sensor? If so whitch one?


CODE PO171 -SYSTEM ADAPTIVE FUEL TOO LEAN. POSSIBLE CAUSE.AIR LEAKS AFTER THE MAF SENSOR OR LEAKS IN THE PVC SYSTEM. EXHAUST LEAKS BEFORE OR NEAR WHERE THE HO2S IS MOUNTED. FUEL INJECTORS RESTRICTED OR NOT SUPPLYING ENOUGH FUEL. FUEL PUMP WEAK. LEAKING EGR VALVE GASKET OR DIAPHRAGM.MAF SENSOR DIRTY CAUSES PCM TO UNDERESTIMATE AIR FLOW / NOW THE BANK 1 SENSOR ITS MOUNTED IN THE EXHAUST SYSTEM BEFORE THE CATALYTIC CONVERTER.THE BANK 2 SENSOR IS IN EXHAUST AFTER THE CATALYTIC CONVERTER.

Aug 27, 2009 | 1998 Ford Expedition

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