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Where is the ecu located on a 2002 chevy impala

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In front of the air filter box under the hood.

Posted on Dec 13, 2010

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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

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Have a 2002 chevy impala with a 3.4L V6 that needs an oxygen sensor. Is there any way to tell which one and where are they located??


Have it scanned from any parts place for free and also ask them for a print out of the location.

Oct 12, 2011 | 2002 Chevrolet Impala

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Where is the egr valve located in my 2002 chevy impala 3.4


the EGR valve is located at the rear of the upper intake manifold, on the driver's side. It is electrically controlled and has a black plastic looking cylindrical cap with a wire connector at the top.

Feb 11, 2011 | 2002 Chevrolet Impala

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Where does the power steering fluid go in a 2002 Chevy Impala?


The fluid goes in power steering pump reservoir. Its located to the rear of engine passenger side.Passernger side of engine - upper left side underneath the alternator . next to the belt. ------ Thanks.Helpmech.

Nov 13, 2010 | 2002 Chevrolet Impala

1 Answer

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.

Jun 01, 2010 | 2006 Chevrolet Impala

1 Answer

Where is the low pressure port located on a 2002 chevy impala?


My 200 impala with 3.8L.... the low port is located on the firewall need the red transmission dipstick.
see picture at: http://s2.photobucket.com/albums/y48/ZeeVert/2002%20Impala/ac%20condensor/?action=view&current=P1190272.jpg

May 21, 2010 | 2002 Chevrolet Impala

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Whee is the passlock located on a 2002 chevy impala


it is integral to the body control module

Nov 10, 2009 | 2002 Chevrolet Impala

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Low coolant lite stays on but car does not overheat and fluid level is good


reset your ecu if it comes back on and everthing checks 100% fluid level and thermostat your ecu is faulty and need a new one

Nov 03, 2009 | 2003 Chevrolet Impala

1 Answer

2002 Chevy Impala Sensor # 3


You didn't give the engine size, so I'll give what my manual shows.
The 3.4L engine----- 2nd one in from the left, in back of the engine.
The 3.8L engine------2nd one in from the left, in front of the engine.

Mar 12, 2009 | 2002 Chevrolet Impala

1 Answer

2002 chevy impala o2 location?


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

Feb 26, 2009 | 2002 Chevrolet Impala

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