Pontiac Grand Prix

Where is O2 sensor in 1990 grand prix?

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2006-03-26 20:47:51
2006-03-26 20:47:51

on the rear exhaust manifold, directly behind the motor

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O2 sensors are always located on the exhaust system.O2 sensors are always located on the exhaust system.

The O2 sensor is right off of the rear exhaust manifold, right of the transmission fluid dipstick.

the vehicle in question has 2 oxygen sensors one in the manifold and one by the converter.

This is one of the two sensors which is downstream directly after the catalytic converter.

for a 97-03 grand prix there is a front and rear o2 sensor. bank 1 sensor 2 is the sensor located on the exhaust near the catalytic converter (cat) also known as the REAR sensor... bank 1 sensor 1 is located on the back of the engine on top of the exhaust manifold or headers would be the street term. thats the FRONT sensor.

if your check engine light is on change your o2 sensor. a bad o2 sensor will cause bad gas milage. also a dirty air filter or dirty injectors.

most o2 sensors on any car are located in the exhaust you should have 1 before that cat and 1 after and they are cylinder shaped with 4 wires coming out

I believe the O2 sensor heater is a fused circuit, you will need a wiring diagram to tell which one it is.

There are 2 oxygen sensors. 1 sensor located right behind the engine (which is known as the upstream sensor) and one behind the catalytic converter (known as the downstream sensor). It is located at about the middle point of the vehicle on the top of the pipe. You will need an O2 sensor socket to remove the upstream sensor, and you will need an O2 sensor wrench with a pivoting handle to remove the downstrean sensor.

Downstream O2 sensor is an O2 sensor after the catalytic converter. Upstream O2 sensor is an O2 sensor before the catalytic converter.

bad connection to O2 sensor, or dirty/bad O2 sensor.... clean or replace with new

Just below firewall on exhaust pipe.

O2 sensor Heater Bank 1 Sensor 1

the o2 sensor for a 1990 Chevy lumina euro 3.1l v6 is on the down pipe for the exaust just below the manifold on the back side of the engine, by the firewall

The 2000 Grand did not use the 318. The O2 sensors are in the exhaust on either side of the catalytic onverter.

Your Vehicle has two oxygen sensors. The upstream or pre-cat sensor is located in the exhaust manifold, under the hood , towards the rear of the vehicle. The downstream or post-cat sensor is located in the exhaust pipe, after the cat, under the vehicle.

That is the O2 sensor in the exhaust closest to the engine.

There are two, in the exhaust on the back of the engine.

O2 sensors are located in manifolds and in the front pipes

check on the exhaust manifold and the catalytic converter. there are possibly 2 O2 sensors. unplug them and unscrew them with a wrench or buy a socket for an O2 sensor.


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