Question about 2000 Nissan Sentra

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Catalatic Converter/O2 Sensor

Was wondering the cost to replace the O2 Sensor and/or Catalitic Converter? Thanks in advance.

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I hate to quote prices because they can differ so much between regions. The catalytic converter itself is rather expensive, sometimes as much as $400 to 600 US. The O2 sensor itself is probably $100 US or more. Then the labor adds another $250 or more.

Posted on Dec 01, 2008

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Misfire losses power at 65 mph


Check for o2 sensor code! The o2 sensor monitors the catalitic converter! And the catalitic converter may need to be replaced!

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2006 mitsubshi galant bank 1 sensor location


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Error code p0032 on 2004 dodge caravan. what is the code?


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P0032 means HO2S Heater Control Circuit High (Bank 1 Sensor 1).

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Check O2 sensor located in bank 1 (cylinder 1 side- see here), and after the catalitic converter (there is also an O2 sensor before cat converter).

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I would like to know where all the o2 sensors are on my 2003 Ford Windstar minivan???


You have one on each manifold pre catalitc converter then you have one after catalitic converter sometime the use as many as four one before the catalitic converter and one after this controls fuel trim and tells the computer if the catalitc conveter is working or not. If it has two one before and one after the catalitic converter this is usedd to control overall long fuel trim. the two on each manifold will be heated so the engine will reach closed loop quickly once in close loop this allows for the rest of the engine componets to work, and that includes knock sensor timing advance and ****** and fuel rail pressure more or less depending on readingsform 02 sensors also controls when the egr VALVE comes on, if it comes on too quickly it will cause the engine to get poor fuel mileage and casue spitting out of black smoke from being to rich. Also could plug the catalitic converter and could damage the engine. Thanks for using fix-ya and hope this helps.

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1 Answer

Mazda 2000 MX-5 convertible, 85000 miles.-check engine light remains on. Have replace the crankcase sensor. stalling quit. Both catalatic converter sensors replaced. do I need to replace the CC now?


It depend on the code. there are a lot of things other than the O2 sensors. Have it scanned and bring the code back to this sight so we can tell what the problem is.

Most Advance and Autozone store will scan it for free.

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Exact location of downstream O2 sensor.


Downstream O2 sensor is after (downstream) the catalitic converter on the exhaust pipe. Upstream O2 sensor is after (downstream) the engine exhaust manifold - before (upstream) the catalitic converter. Upstream O2 sensor controls air-to-fuel ratio to yield a small excess oxygen. Downstream O2 sensor assesses the catalitic converter performance.

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1 Answer

Runs Rough no catalatic converter


Well, i know that a took out a bad caat once and the truck ran terrible. So I went and put a new one in and it ran great. The O2 sensors can't read the exhaust gases correctly with out it. It was a Dodge with a 5.2L

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1 Answer

Engine light wont go off.


The catalitic converter is a mechanical device , it simply converts harmful emissions into water/vapour. The 02 sensor if faulty would put the engine management light on. If the 02 sensor has been faulty for sometime it could tell the ECU to supply the wrong amount of fuel to the engine which in turn would eventually damage the catalitic convertor. So you may have to change both in the end, but first I would check out the 02 sensor and replace if required.

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Code P0132 is O2 sensor voltage high bank1 sensor 1, P0137 is O2 sensor voltage low bank 1 sensor 2, P1189 indicates a fuel control problem bank 1. It could be either the O2 sensors or a convertor. Could also be intake manifold gaskets. GM had a lot of problems with the lower intake gaskets leaking on the 3.1 and 3.4 engines that was linked to their Dexcool coolant. In fact they just lost a class action lawsuit about it. check with the dealer and see if the intake problem has been taken care of. Hope this helps.

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Please Help... p0404 and p0137 Error Codes (1999 Saturn SL1)


hey if you truely think it is your egr valve unhook it and if that is the problem then when it is unhooked it should run better and the codes should not come up. hey if you cahnged the 1 o2 sensor and not the other you probably made the code for the one u repalced come up again. i would recommened that you change both of the o2 sensors at the same time. try checking if your catalatic convert is plugged. how you do this is take a dollar bill and hold it at the end of your tail pipe while it is idleing and if the dollar bill stays still you have a plugged catalatic converter.

Dec 10, 2008 | 1999 Saturn SL

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