Question about 2004 Chevrolet Cavalier

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Cavalier o2 sensor

How do you replace an o2 sensor? What kind of tool(s) do you use/

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The 02 sensor is screwed into the exhaust pipe, unhook the wire connection, the best thing to use is an 02 sensor socket, and unscrew the sensor. You can use a wrench, but some of them can be stubborn. There are different size sockets, so have the guy in the auto parts store match the new sensor with the right socket.

Posted on Jan 28, 2009

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You simply locate the oxygen sensor, once you have done that you will need to make sure you have and oxygen sensor socket, and wrench. After that unplug your o2 sensor, unscrew it, put new one in, plug it, and be on your way :)

Posted on Jan 28, 2009

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2004 chevy cavalier wouldnt start replaced fuel pump, filter, checked fuse and relay . Started up drove about 20 miles then went out to start it and wont start fuel pump not pressurizeing


Check your O2 sensors. They will give that affect and work only when your engine heats up. If the car cools down and starts up again, that is a sign that your O2 sensors are shot. Replace them.

Jan 17, 2011 | 2004 Chevrolet Cavalier

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How to Replace the O2 Sensor in a Chevrolet Cavalier Car?


O2 sensor needs to be replaced when you get low gas mileage in car.
The procedure to replace is as follows: ----
1) The oxygen sensor is located under the car.
2) Put the car on jack stands on the rack, this will give you proper sensor location in the car.
3) The sensor has to be turned a bit then it can be easily removed.
4) Most of the times the O2 sensor comes out very easily but if its bit hard to remove it then you can use "FREEZE spray" to make it gets loose.
5) The spray will make it come out easily.
6) When the O2 sensor is getting removed, some of the wiring's will also come out.
7) Before removing the O2 sensor, take the note of the wiring's and the position of wiring so while inserting new O2 sensor you don't get confused.
8) Now after you remove the old faulty O2 sensor out. Carefully insert new O2 sensor in same position.
9) And reverse/refit all the wires / parts which you removed while replacing the old O2 sensor.
This will help. Thanks.

on Mar 22, 2010 | Chevrolet Cavalier Cars & Trucks

1 Answer

Where is the O2 sensor located in a 98 chevy cavalier 2.2 engine


your 02 sensor is located on the exhauts start at the manifold and follow the pipe down there will be a sensor sticking out with a few wires thats your o2

Nov 30, 2010 | 2000 Chevrolet Cavalier

1 Answer

2003 cavalier ls 2.2L show engine code p0141, O2 sensor replaced, no problems found in the wiring. Now what?


2003 cavaleir with code po141. this codes is saying o2 heater , so yes if sensor wiring is good then o2 is bad, but which o2 did you change? the correct o2 is the rear one after the converter not before the coverter, theres one up by the engine and i think its on the exhaust manifold and then another o2 down on the exhaust after the cat, thats the one you need to replace, let me know is thats the one, if not and you replaced the one at engine then replace the other one after the cat and this will solve the problem, let me know hope this is helpful.johnjohn2_12.jpg

Nov 05, 2010 | 2003 Chevrolet Cavalier

2 Answers

How do you remove the O2 Sensor from a 2000 Chevy Cavalier


It takes a special socket, and you just unplug it, use the socket and unscrew the sensor.

Sep 28, 2010 | 2000 Chevrolet Cavalier

1 Answer

O2 sensor and evap solenoid


Hello you must disconect battery while replaceing this parts.This is a saftey messure also it alows the computer to reboot once conected and will reset the engine light and put it out for you.If you did not disconect the battery chances are you will still have service engine light on.Disconect your battery wait a couple of minutes reconect that should do it for you .Hope my support helped you.regee

Dec 16, 2009 | 2004 Chevrolet Cavalier

2 Answers

I have a P0171 to lean bank 1 error code Upstream O2 sensor?


oxygen sensor, vacuum leak, and yes it could most definitly be if you swaped the wires of the firing order accidently you will get a code p0171 Check the tubing going from the air filter to the intake manifold to see if it has come loose. This might account for extra air going into the intake manifold than the computer is aware of. Otherwise it may be due to a faulty(or dirty) MAP/MAF sensor. Another possible cause is from low fuel pressure due to restricted fuel lines or a bad fuel pump.

Jul 28, 2009 | 1999 Chevrolet Cavalier

1 Answer

DTC #420 on a 2004 chevy Cavalier


Need to monitor rear HO2 sensor operation. Possible bad rear O2 sensor or failed catalytic converter

Mar 29, 2009 | 2004 Chevrolet Cavalier

3 Answers

What does it mean when the service light with the small wrench comes on


Could be any number of things, indicates it needs service of some kind.

Aug 01, 2008 | 2000 Chevrolet Cavalier

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