Question about 1988 Ford Ranger

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How to test the O2 sensor on a 1988 ford ranger v6 2.9l

It has 1 o2 sensor. located just before 1st cat converter.

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Posted on Jan 02, 2017

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jeffk14
  • 16 Answers

SOURCE: 1998 FORD EXPLORER SOHC O2 SENSORS

HERE. They have the Ranger, Explorer & Mountaineer on the same page but if you read through it, it will give you an idea on where to look.

Posted on Nov 20, 2008

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Ajkill
  • 2035 Answers

SOURCE: 2003 Ford Ranger/2.3 O2 sensor - How many and Where located ???

Engine Heated oxygen and catalyst monitor sensors—2.3L engine44e2701.jpg

Posted on Jan 16, 2009

blueextc3221
  • 15935 Answers

SOURCE: o2 sensor location

DTC P0156 indicates the output voltage of the downstream Heated Oxygen Sensor (HO2S) is less than some calibratable functional window. The possible causes are:

  1. Pinched, shorted and/or corroded wiring and pins.
  2. Crossed sensor wires
  3. Exhaust leaks.
  4. Contaminated HO2S.
  5. Bad HO2S.
Since you didnt specify the engine size in your vehicle - please see the diagram below for the location of the sensor(s)

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Posted on Apr 16, 2009

  • 225 Answers

SOURCE: Need locations of o2 sensors in a 04 Ford Escape.

bank 1 sensor 1 is next to the fire wall. on the upper end of the exhaust

Posted on Aug 14, 2009

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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

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1 Answer

Olds alero 3.4 location for oxygen sensor bank1 sensor 1
O2 sensors ( oxygen sensors ) are located after the cat converter and for bank 1 it will be after the cat converter attached to the manifold closest to the firewall
the sensors that you see in the exhaust manifolds or before the cat converter are heated oxygen sensors (HO2S) and are completely different to normal O2 sensors

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3l, 6 cyl (California emissions). Where is the 4th O2 or (A/F) sensor?
HO2S( heated sensor) are before the cat convertor either in the manifold or exhaust pipe to the cat converter
O2 sensors are in the exhaust after the cat converter/s
I am drawing the difference because they are not all O2 sensors as each has a different operation for the position in the exhaust
the missing one will be in the exhaust manifold or pipe at a convenient position for servicing before the cat converter

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O2 sensor bank 1 sensor 2 on ford explorer 2005
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Mar 16, 2015 | 2005 Ford Explorer

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Code p0135 andp0141 put new parts o2 iac tps check light still comes on what's wrong with it 97 ranger 2.3
Code 135 is for a problem with the O2 sensor heater circuit for the sensor in front of the catalytic converter, and code 141 is for the same thing for the sensor after the cat.
Two sensors seldom fail at the same time, so I would be checking the power circuit going to the O2 sensors. You may need a shop manual to get the testing procedures.

Sep 01, 2014 | Ford Ranger Cars & Trucks

1 Answer

Will replacing bank 1 o2 sensor clear engine light if thats the fult code comming up? and where is it located
o2 sensor replacement will not necessarily clear code . It may be necessary to use a scanner for that . O2 sensors are located after the cat converter and is not a heated unit as is the HO2S unit

Jul 22, 2014 | 2006 Ford Ranger

1 Answer

Codes po171 , po136
PO171 is the 1st o2 sensor on bank 1. With that said a vacuum leak will also throw this same code so before I go changing an o2 sensor I would completely go over the engine and look for a vacuum line or intake leak. PO136 is the o2 sensor bank 1 the second sensor in the exhaust. Again here are some of the things that can cause this code. ( I always look for a vacuum leak somewhere first)

Jul 06, 2014 | 1988 Ford Ranger

1 Answer

Locate o2 sensor
o2 sensors are at the rear of the cat converter-- HO2s sensors are at the front of the cat converter . Use the special tool to remove /replace them as if you don't then the wires will be damaged.

Apr 04, 2014 | 2005 Ford Freestar

2 Answers

How do you locate O2 sensors on 1996 explorer v-6

There are 4 oxygen sensors (o2 sensors)and they are all located on the exhaust coming from the motor under the vehicl by the catylac converters.

Nov 29, 2010 | 1996 Ford Explorer

2 Answers

Where is the O2 Sensor located on 2003 Ford Focus? Check Engine Light is on and trouble shooter device says the problem is in the O2 Sensor Heater Circuit, but where is it located.
The code will tell you which O2 sensor it is.
The code will point to either bank 1 sensor 1; bank 1 sensor 2; bank 2 sensor 1; bank 2 sensor 2.

From what I remember with a focus, it should only have 2 sensors, sensor 1 will be located before the cat, and sensor 2 will be located after the cat.

Oct 08, 2009 | 2003 Ford Focus

1 Answer

O reading for O2 sensors on 98 Ranger XLT
Yes the 98 ranger has 3 02 sensors,they are located in the exhaust system under vehicle,2 of them
are in front of the cataletic converter and 1 behind it.I replaced mine ,reset the codes and the check
engine light still comes on?

Jan 16, 2009 | 2004 Ford Ranger

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