Question about 2004 Cadillac Deville

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How many oxygen sensors does this Cadillac DeVille 2004 have

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No idea since we do not know the sizeof motor etc .

Posted on Apr 16, 2015

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Posted on Jan 02, 2017

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SOURCE: 2002 Cadillac Coolant sensor

The engine coolant temperature sensor is located on the driver side of the engine near the rear of the engine compartment

Posted on Oct 08, 2008

  • 54 Answers

SOURCE: Were are the O2 oxygen sensors location on a 2001

hi im wesall o2 sensors are located in the exaust system yours has one before the converter one after if it has duall exaust before the cat on drivers side will be upstream sensor bank 1 after cat right side will be bank 2 sensor 2
thanks wes
ps please rate me

Posted on Mar 28, 2009

  • 3 Answers

SOURCE: 1994 cadillac deville concours

On my car, which is the same as yours, it is located on the manifold top back left. Pictures in the book just show it on top.

Posted on Jul 24, 2009

  • 65 Answers

SOURCE: change oxygen sensor

Under hood, center, front engine area, above exhaust pipe flange, mounted in exhaust manifold
Under hood, center, rear engine area, above exhaust pipe flange, mounted in exhaust manifold

The oxygen sensor may be difficult to remove when the engine temperature is below 120°F (48°C). Excessive force may damage the threads in the exhaust manifold of exhaust pipe.

  1. Start the engine and let it warm up to 120°F (48°C), stop the engine and disconnect the negative battery cable.
  2. Detach the electrical connector from the oxygen sensor.
  3. Using a special, oxygen sensor socket, remove the oxygen sensor from the exhaust manifold or exhaust pipe.

NOTE A special anti-seize compound is used on the oxygen sensor threads. The compound consists of liquid graphite and glass beads. The graphite will burn away, but the glass beads will remain, making the sensor easier to remove. New or service sensors will already have the compound applied to the threads. If an oxygen sensor is removed from the engine and if for any reason, it is to be reinstalled, the threads must have this anti-seize compound applied before installation.
  1. Coat the threads of the oxygen sensor with anti-seize compound 5613695 or equivalent.
  2. Install the sensor and tighten it to 30 ft. lbs. (40 Nm).
  3. Reattach the electrical connector to the sensor and the negative battery cable.

0900c1528025ed0c.jpg enlarge_icon.gifenlarge_tooltip.gif Fig. Location of the rear O2 sensor

0900c1528025ed0d.jpg enlarge_icon.gifenlarge_tooltip.gif Fig. Location of the the front O2 sensor

0900c1528025ed0e.jpg enlarge_icon.gifenlarge_tooltip.gif Fig. Use a wrench or special socket to loosen the O2 sensor

0900c1528025ed0f.jpg enlarge_icon.gifenlarge_tooltip.gif Fig. When replacing or reinstalling an oxygen sensor, be sure to lube the threads sufficiently

Posted on Jan 19, 2010

  • 17 Answers

SOURCE: 2004 hyundai elantra oxygen sensor

Your Elantra has more than one oxygen sensor. There is a pre-catalyst sensor and a post-catalyst sensor. Both can be found on the exhaust. You simply disconnect the sensor wire and remove the sensor plug with the proper size deep socket. Be sure you have the correct sensor for replacement.

Because of the heat involved with the exhaust, make sure the engine is cool before attempting to remove and replace the sensors. They may be tough to remove so a shot of WD-40 or 5-56 spray may need to soak into the threads to ease removal. When you replace the new sensors, a coating of anti-seize will be helpful for future removal.

Keep in mind that one malfunctioning sensor can send information that will set off codes on other sensors "downstream" or send codes from other emission controls on the engine.

Posted on Apr 26, 2010

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How do i replace an oxygen sensor on 1993 cadillac deville

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Jan 19, 2016 | 1993 Cadillac DeVille

1 Answer

My check engine light came on diagnostics said I need oxygen sensors I have a 2004 Cadillac deville where are they located on bank 1 and bank 2

on exhaust pipe in front of catalyst converter
bank 1 means the exhaust manifold that the number one cylinder is in.

Sep 11, 2013 | Cadillac DeVille Cars & Trucks

2 Answers

2001 Cadillac Deville oxygen sensor wiring diagram

The wiring diagram shows the wiring color code, Power rating and connector plug used. The wiring diagram explains the vehicle's electrical connections with color code. It's a bit complicated to understand.


Apr 07, 2013 | 2001 Cadillac DeVille

1 Answer

Where are oxygen sensors located on 1996 cadillac deville

there is 4 on the 1996 cadillac deville which one do you need

Nov 18, 2012 | 1996 Cadillac DeVille

1 Answer

My 2000 Cadillac Deville engine light on. Engine code PO420

Catalyst System Efficiency Below Threshold (Bank 1)

A code PO420 may mean that one or more of the following has happened:
  • Leaded fuel was used where unleaded was called for
  • An oxygen sensor is not reading (functioning) properly
  • The engine coolant temperature sensor is not working properly
  • Damaged or leaking exhaust manifold / catalytic converter / exhaust pipe
  • Retarded spark timing
  • The oxygen sensors in front and behind the converter are reporting too similar of reading

  • Check for exhaust leaks at the manifold, pipes, catalytic converter. Repair as required.
  • Use a scope to diagnose the oxygen sensor operation (Tip: The oxygen sensor in front of the catalytic converter normally has a fluctuating waveform. The waveform of the sensor behind the converter should be more steady).
  • Inspect the downstream heated oxygen sensor (HO2), replace if necessary
  • Replace the catalytic converter

May 11, 2011 | 2000 Cadillac DeVille

1 Answer


02 oxygen sensor for bank 2. Hope that helps.

Feb 26, 2011 | 2004 Cadillac Deville

1 Answer

Where is the oxygen sensor on a 2001 cadillac deville

you will find it on the exhaust pipe, usually in front of the car. It's the only sensor(s) that's on the exhaust. Some cars have 2 of them, one before and one right after the catalitic converter.

Dec 13, 2010 | 2001 Cadillac DeVille

1 Answer

1993 cadillac deville 4.9 300ci. cars engine surges occasionally at random times only at low speeds. shut the car off and back on its fine. replaced fuel pump filter throttle sensor.

mcdevito75 Here, The air idle sensor / motor could be faulty, Oxygen sensor in the exhaust system could also be faukty, Have your shop run a scan.

Nov 02, 2009 | 1998 Cadillac DeVille

1 Answer

Need location of cranshaft sensor on 2004 cadillac

There are two crankshaft sensors located Center front of the engine, near the base of the engine oil dipstick tube.

Sep 25, 2009 | 1994 Cadillac DeVille

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