Question about 2001 Ford Expedition

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I need a diagram on all 4 o2 sensors on a 2001 ford expedition

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6ya6ya
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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

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virgils
  • 39 Answers

SOURCE: diagram bypass heater cord on 2001 ford expedition eddie bauer

the heater bypass is quite simple, if you look at the firewall you will see two medium sized coolant lines, remove them from the firewall and link them together using a proper sized tube, you can purchase a kit at a parts store quite cheaply

Posted on Oct 11, 2008

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...."

bschilz
  • 2049 Answers

SOURCE: location of the bank 1 sensor 2 O2 sensor on a 2001 ford escape

B1 means the sensor is located on the same bank of the engine that has the #1 cylinder. B2 is located on the opposite bank.
S1 means the sensor is located BEFORE the catalytic converter
S2 means the sensor is located AFTER the catalytic converter

You didn't say which engine you have, so I've included the diagrams of both 4 cyl and 6 cyl so you can see the banks

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Posted on Oct 20, 2009

  • 454 Answers

SOURCE: 02 Ford Expedition need diagram change serpentine belt

log itno autozone.com

they have free tech solutions and diagrams...........

Posted on Feb 11, 2010

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1 Answer

Can someone give a diagram location of up and downstream 02 sensors on 2003 ford expedition?


The upstream O2 sensors are just off the engine exhaust manifolds, the downstream sensor is located aft of the catalytic converter, it is not called an O2 sensor it is referred to as the catalyst efficiency monitor.

May 04, 2017 | Ford Cars & Trucks

1 Answer

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

I'm wanting a diagram of the locations of the o2 sensors on a 2002 ford expedition


zjlimited_918.jpg

Fig. HO2S sensor locations Expedition shown (click image for zoom)



Hope helps (remember to rate this answer).

Mar 23, 2011 | Ford Expedition Cars & Trucks

1 Answer

Where is bank. 1 sensor 2 on a 2003 expedition


Here is a diagram showing the Ford O2 sensor numbering system. Bank 1 is always the side with cylinder #1. Bank 2 is the opposite side (click for zoom).

zjlimited_261.gif

Hope this helps (remember to rate this answer).

Mar 21, 2011 | 2003 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

1 Answer

Location of the bank 1 sensor 2 O2 sensor on a 2001 ford escape


B1 means the sensor is located on the same bank of the engine that has the #1 cylinder. B2 is located on the opposite bank.
S1 means the sensor is located BEFORE the catalytic converter
S2 means the sensor is located AFTER the catalytic converter

You didn't say which engine you have, so I've included the diagrams of both 4 cyl and 6 cyl so you can see the banks

7acfed1.gif
d9eb1af.gif

Oct 20, 2009 | 2001 Ford Escape

1 Answer

2002 ford expedition "service engine soon" light keeps coming on. I've had the O2 sensor replaced three times in the past month, now the next day or two after the sensor replacement the light comes back...


get a new mechanic, need to check for vac. leaks, poss needs tune up. alot O2 codes i have gotten have been created by vacuum leak or warn out plugs, rarely have i had to replace a O2 sensor.

Oct 14, 2009 | 2002 Ford Expedition

2 Answers

Diagram bypass heater cord on 2001 ford expedition eddie bauer


the heater bypass is quite simple, if you look at the firewall you will see two medium sized coolant lines, remove them from the firewall and link them together using a proper sized tube, you can purchase a kit at a parts store quite cheaply

Sep 12, 2008 | 2001 Ford Expedition

1 Answer

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.

Jun 16, 2008 | 2001 Ford Expedition

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