Question about 2004 Chevrolet Impala

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How many o2 sensors are on the 04 impala 3.8 and where are they?

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Tech jk
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If the code you have is p0420, then it sounds like you mayu have a bad catalytic converter. This will inturn cause the oqygen sensor codes, It may still be under warranty. The warranty is up to 125k miles.

Posted on Dec 01, 2008

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SOURCE: 2002 chevy impala o2 location?

it is locared on the driver side on top of the transmision

Posted on Feb 27, 2009

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SOURCE: Where and how many o2 sensor's on a 2003 chevy impala?

There are two sets of 02 sensors on most cars today. On set is set directly behind the header, one on each side, if it is a V engine. This set is used for the engine's ECU to control timing as well as other variables. The other set is placed on a bung in your Catalytic converter. This 02 sensor is used for emissions purposes only.

Posted on Jun 01, 2010

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1 Answer

04 impala 02 sensors can it affect your driving


It can affect your gas mileage. Not usually the driveability. But clogged catalytic converters can. And this can throw O2 codes.

Apr 30, 2016 | Cars & Trucks

1 Answer

Where are the 02 chevy impala 3.8L o2 sensor locations, I only see three. the top bank one sensor 1 is stripped out, how do i get that one out?


you can apply pressure to the sensor while undoing it to force it out or you will have to cut out the thread area and get an O2 sensor bung hole replacement at an auto supply store and weld into place and install a new O2 sensor. bank 1 sensor 1 is located in the front pipe off the manifold that has cylinder #1 on and bank 2 sensor 1 is on the side that cylinder #2 is on like sensor 1. sensor 3 is the one just before the cat.

Sep 17, 2014 | 2002 Chevrolet Impala

1 Answer

2004 chevy impala problems


Try testing the radiator cap or just replace it,flush the cooling system, sometimes dirt can build up in the front of the radiator.








Mar 14, 2014 | Cars & Trucks

1 Answer

Impala o2 sensor


1. Reduced fuel economy
2. Increased exhaust emissions
3. Poor engine performance
4. Engine check light appears
5. Engine stalls during idling
6. A rotten egg odour emitting from the exhaust
7. Your engine surges or hesitates
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Jun 03, 2013 | Cars & Trucks

1 Answer

2005 impala with 144,000. I have had the co2 sensor replaced 3 times driving less than 2800 miles. what is causing this?


Hi,
CO2 or just O2 sensor? O2 sensor may be going bad due to blocked/plugged catalytic converter. This can be replaced @ muffler shop...use a 'universal' type catalytic converter to save some money - you don't have to use a manufacture unless your state requires it.

Td

Nov 06, 2012 | 2005 Chevrolet Impala

1 Answer

For 2003 Chevy impala LS 3.8L exactly how many O2 senors are there? some people says 2 others says 3, so what the answer? thanks


Hello there are two 02 sensors on this vehicle, 02 sensor 1 {pre 02} is located in the rear exhaust manifold. the second 02 sensor {post} is located in exhaust pipe just behind the cat. converter

Jul 08, 2011 | 2003 Chevrolet Impala

1 Answer

Where is the location of the o2 sensor in a 2002 chevy impala 3.8l engine?


if you look on the back side of the engine closest to the firewall there will be one in the exhaust manifold. That one will be the bank 1 sensor 1 O2 sensor.

If you look under the car there will be one right after the catalytic converter. That will be the bank 1 sensor 2 O2 sensor

Jul 06, 2011 | 2002 Chevrolet Impala

1 Answer

02 censor


Your car should have two O2 sensors. One will be located after your catalytic converter. The other one should be located before your catalytic converter somewhere between your headers and your cat. Rarely, on some vehicles, there's a 3rd O2 sensor which is located also somewhere between the catalytic converter and the headers.

Oct 29, 2009 | 2004 Chevrolet Impala

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