Question about 1995 Ford Escort

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1995 ford escort

We can't find the 2nd o2 sensor that is supposed to be after the cat.converter,..can you help? thank you

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  • yadayada
    yadayada May 11, 2010

    That is the Cat monitor, not O2 sensor, if there isn't one you may not have a OBD II emission system, 95 is a cross over year, some were OBD I. What is the trouble code. In any event the sensor is right behind the last Cat, not sure if your car has 2.


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95 doesnt have one only one sensor

Posted on Nov 18, 2008

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Anyone has a diagram or pictures from 1995 Mercury Villager showing the location of the two Oxygen sensors, and which one is Front and which one is Rear? Thanks in advance

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two things to check- 1 fuel filter ,if that doesn't help- 2 catalytic converter

a dirty or plugged fuel filter can cause strange power/idle problems and is fairly easy to change, while the cat is more expensive but can cause prolems that look like an o2 sensor

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My o2 sensor has gone, but i do not know where it is to replace it. Please help!

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Trying to replace both oxygen sensors having a hard time gettin to them tryin to figure out the best and easiest way to get to and remove them and what tool would be best on a 2002 ford escort zx2

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2001 Hyundai Santa Fe - Code P0421 Help!?

code p 0421 refers to warm up cat converter bank 1 --- efficiency below threshold ===causes ---cat converter---wiring ---HO2S (heated oxygen sensor )
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The other 2 are heated oxygen sensor which are located in the exhaust manifold or exhaust pipe before the cat converters
heated oxygen sensors do a completely different job to the O2 sensors in that they report to the ECM, the combustion gas mixture so the the ECM can adjust the mixture for max performance
The oxygen sensors (O2) read what is left after the cat converters have done their job and report to the ECM so that it can fine tune the mix
IF you didn't replace the correct cat converter then that will make the code come back
If you just replaced the O2 sensor , well that doesn't even figure in the problem

Mar 14, 2017 | 2001 Hyundai Santa Fe

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