O2 sensor wiring diagram 2005 ford expedition

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.

Marvin

• 85242 Answers
• Posted on Mar 26, 2009

SOURCE: i need the color wiring for a ford expedition radio

1997 Ford Expedition Car Radio Wiring Diagram
Car Radio Battery Constant 12v+ Wire: White/Purple
Car Radio Accessory Switched 12v+ Wire: Black/Pink
Car Radio Ground Wire: Black/Green
Car Radio Illumination Wire: Blue/Black
Car Stereo Dimmer Wire: N/A
Car Stereo Antenna Trigger Wire: N/A
Car Stereo Amp Trigger Wire: Blue
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: 6′ x 8′
Car Audio Front Speakers Location: Doors
Left Front Speaker Positive Wire (+): White/Red
Left Front Speaker Negative Wire (-): Brown
Right Front Speaker Positive Wire (+): Green
Right Front Speaker Negative Wire (-): White/Orange
Car Audio Rear Speakers Size: 6′ x 8′
Car Audio Rear Speakers Location: Rear Doors
Left Rear Speaker Positive Wire (+): Light Blue/Black
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Purple/White
Right Rear Speaker Negative Wire (-): Light Blue
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Harvey N Tawatao

• 3854 Answers
• Posted on May 29, 2009

SOURCE: installing chip and want to double check wiring. Need to find IAT/MAF sensor diagram for 2003 Ford Ranger

Save your money, the chip is a ohm resistor at Radio Shack for under $2.00. It splices in to you IAT wire harness located at the intake tube between the air filter housing and throttle body.
Problem with this system is, that you can not adjust anything and have to run a constant 91 octane just to make sure you do not have a Detonation. The ECM will catch the Detonation from the knock sensor and compensate for it by retarding the timing which in turn lose of HP till next start up.
If you like and don't mind the check engine light on once and awhile, you can do the same by just disconnecting the IAT wire harness which give the ECM a 0 resistance thinking it's -20 out side and turn the timing up and lengths the injector pules.
When i was running a Nitro in the Toy before i sold it, i had installed a 10K ohm Potentiometer which you can buy at radio shack for under $5.00 i believe, I just spliced it in to the IAC wire harness so if i wanted to play with the Nitro I'ld turn the resistor up making the engine think it's 185 degrees F and would ****** the timing so i would not hurt the engine. But if i wanted to get more timing i would just turn the knob to drop the resistance to get more time since the engine thinks it's -20 out side.
Hope this helps. Keep me posted if you need more info. Best thing is to do a dyno tune and you can change everything right down to the Shift points.

SOURCE: o2 sensor wiring diagram

A new 02 sensor will come with new wires and connector. If not get back with me I think there is a repair kit for that problem.

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.