Where are oxygen sensors located and what are the names - designations - Sable?

Answer 1

Here is the low-down on oxygen sensors, and their location designations explained:

Oxygen sensors are screwed into the exhaust system at various points. Some people say that there are 4 oxygen sensors, but technically, that is not correct. Only the front 2 are considered oxygen sensors.

These oxygen sensors are screwed into the exhaust pipe or directly into the exhaust manifold, one on each bank. Because they are in front of the catalytic converter, this is often referred to as 'upstream'.

The other 2 are actually called catalyst monitors. They are oxygen sensors, but they serve a different purpose. They monitor the activities of the catalytic converters, thus the name, catalyst monitors. They are screwed into the exhaust one on each bank, after, or downstream, of the catalytic converters.

On a 4 cyl engine, there are only a total of two such sensors, the one in front of the catalytic converter is the O2 sensor, the one behind the cat is the catalyst monitor.

The location names for them are as follows:

• On a 4 cyl, the front / upstream is called "bank 1 sensor 1" and the rear / downstream sensor is called "bank 1, sensor 2."
• On a V6 or V8 engine:
  • the passenger side bank on a forward facing engine, or the bank closest to the firewall on a transverse mounted engine, is bank number 1, so the forward / upstream sensor on that bank would be "bank 1, sensor 1."
  • The driver's side bank (forward facing mount engine), or front bank (transverse engine) would be bank number 2, thus the forward / upstream sensor on that bank would be "bank 2, sensor 1," and the rearmost / downstream sensor on that bank would be "bank 2, sensor 2."

NOTES:

• Use lots of penetrating oil - allow to soak - to make removal easier and avoid damaging the exhaust pipe
• the sensors are screwed directly into the pipe at a 90 degree angle and look like spark plugs with either 8", 12", or 14" wires attached to them
• Tools:
• ** ** it is usually a 7/8ths size wrench
  • special-purpose oxygen sensor socket - not expensive, and commonly offered for free use by the auto parts store
• Inspect the condition of wires and that they are not touching any parts of the exhaust system

NOTES:

Rule of thumb: Bank 1 is on the side of the engine with cylinder #1

6 Cylinder numbering:

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1 2 3

4 5 6

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Front of vehicle

AnswerBank 1 is usually the engine side with the number one cylinder. As you have a 6 cylinder and front wheel drive, bank one is on the backside of the motor - meaning near the firewall/windshield. Sensor 1 is the sensor before the catalytic converter. Open the hood, follow the exhaust pipe from the motor towards the catalytic converter. The first sensor you come to is sensor one. Sensor 2 is after the catalytic converter. Bank 2 is the opposite side of the motor from bank 1 (obviously). CorrectionAlso see http://v8sho.com/SHO/TSB0197HO2SServiceTips.htm#fig1 Answer - EditorialAnd before spending any $$ on replacing a sensor, I would test it to ensure it really really has failed! It's very likely someone read the DTC (diagnostic trouble codes) that cited an oxygen sensor reading - but then said something that leads you to believe it's a failed/bad sensor and needs replacing. The vast majority of times that is NOT the problem.

Take those codes and research them on the internet! (see "Related Links")

A perfect example are P0171 and P0174 codes - indicate a lean mixture was read in bank 1 & 2 (respectively). On the Windstar, that's a prime symptom covered in Technical Service Bulletin TSB# 03-16-1 (see "Related Questions")

The auto parts store guy had me ready to spend $80 on 2 sensors. - CCoach

AnswerThey are screwed into the exaust system at various points. Some people say that there are 4 oxygen sensors, but technically,that is not correct. Only the front 2 are considered oxygen sensors. They are screwed into the exaust pipe, one on each bank,after the exaust manifold, but before the catalytic converter. Sometimes they are screwed directly into the exaust manfold itself.

The other 2 are actually called catalyst moniters. They are oxygen sensors, but they serve a different purpose. They moniter the activities of the catalytic converters, thus the name, catalyst moniters. They are screwed into the exaustone on each bank,after, or downstream, of the catalytic converters.They are all just typical 4 wire heated O2 sensors, nothing special about them. The EPA requires all cars sold in the US after 1996 have heated oxygen sensors.

AnswerAs far as I know the only place OXYGEN sensors are mounted are on the exaust system, either on the header pipe or after the cat-converter. Rarely are they located on the cat-converters themselves. Mostly they will have one electric wire connecting them to the computer but depending on the year and make the will have a two wire connection. I am not certain about the Sable's electrical wiring but the OXYGEN SENSERS postions for Ford/Mercury are generally on the hot pipes. I hope this helps. Answercheck behind the pass side catalitic converter. (after) the unit. AnswerBank 1 is the front side of the motor (front of car), Bank 2 is the back side of car. (Bank one is actually associated with the number 1 cylinder which just so happens to be on the front of the car for the sable). Sensor 1 is before the catalytic converter, Sensor 2 is after the catalytic converter. Example, Bank 1, sensor 1. The sensor in the exhaust pipe for the front side of the motor before the catalytic converter. AnswerThe o2 sensor is in the exhaust manifold. It looks like a plug sticking out of the manifold and has 2 and sometimes 4 wires coming out of it. Hope this helps Don's Auto AnswerThey are screwed into the exaust system at various points. Some people say that there are 4 oxygen sensors, but technically,that is not correct. Only the front 2 are considered oxygen sensors. They are screwed into the exaust pipe, one on each bank,after the exaust manifold, but before the catalytic converter. Sometimes they are screwed directly into the exaust manfold itself. The other 2 are actually called catalyst moniters. They are oxygen sensors, but they serve a different purpose. They moniter the activities of the catalytic converters, thus the name, catalyst moniters. They are screwed into the exaustone on each bank,after, or downstream, of the catalytic converters. Answerthe oxygen sensors are on the exhaust pipes right before where it hooks into your manifolds. there are 2 of them. one for each manifold. AnswerGenrally the O2 sensor in most vehicles is located in the exhaust system. With the engine cool enough to touch, look at the front of your engine where the exhaust manifold is attached to the engine. The O2 sensor will be attached to the manifold or a little lower where the manifold joins into a single pipe. It will be the only electrical component attached to your exhaust system nearer to the engine. Never remove any nut, bolt, spark plug or sensor from a hot engine. Warping of the orifice may occur as it cools and now you have a bigger problem. If you must, then replace the part immediately.