Question about 2004 Cadillac Escalade
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Posted on Jan 02, 2017
There are 4 o2 sensors.They are all on the exhaust system.There is one on the left side exhaust manifold pipe and one on the right exhaust manifold pipe.Then there is one in front of the catalytic converter and one in back of the converter.It would be better if you had the codes that they got because there can be other problems that can cause an o2 sensor to fail.Also I have never had all 4 sensors go bad at one time.You could have other problems.Vacuum leaks,plugged air filter,bad connections,or bad grounds.These vehicles are also good for intake gaskets being bad.Hope this helps.Good luck.
Posted on Jan 19, 2010
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
SOURCE: 2004 escalade ac problem
The AC blend door must be sticking, this is caused by the blend door motor, or in some cases a warped door that sticks, to fix this you will have to pull the dash and test the operation of the blend door which is in the AC ducting plenum chamber.
Posted on Aug 26, 2008
im not for sue how many but u need to take it to autozone if u have one where u live they will tell u where it is the most comon one if u have straight eguast is the one right in front of the cats if its that one u should notice a stall out every time u fill up from below empty on ur gauge
Posted on Mar 18, 2009
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