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4

It's just in front of the front passenger side door, under the dashboard. It might be stuck down behind the carpet a ways.


4

I've diagnosed this condition many times with a vehicle-specific scan tool, and I don't think it can be done without this or an oscilloscope. O2 sensors work in the range of less than 1 volt (.2v to .7v) In particular, the rear O2 sensor should stay at a fairly constant .5v if the cat is working right. Wild swings to the extremes indicate the cat isn't ...


2

If you remove the passenger side foot kick panel covering the ECU you will see it there. On the 97 it is the blue 2 pin plug.


1

The gas or petrol cap is a good idea. Removing the coil pack(s), on cylinder 1, is another one. Sometimes you can easily find an electrical connector - say the O2 sensor - and disconnect it. This, of course, depends on what connectors are easily reachable. On a Hyundai Coupe, the O2 sensor is easily accessible.


1

The easiest thing I can think of is to remove the gas cap and start the engine. You should quickly see a MIL. The scan tool should report something like Evap emission fault large leak.


1

Since you have new plugs and wires you may have a bad coil. Of course one of the new parts may be bad, not unheard of but unlikely. If the fuel injected into the cylinder isn't burned it passes into the exhaust system where the O2 sensor sees a rich condition that is outside the normal parameters and sets a fault code. You need to see if that cylinder is ...


1

Symptoms for a bad EGR valve and a bad MAF sensor aren't too different, it is a fair possibility that the MAF needs to be cleaned (easy to do). Just take the MAF sensor out, clean the electrical connection and spray through the sensor with some MAF cleaner or (though it's harsher it does work) Carb cleaner. Inspect the element, it should be a small silver ...


1

Speaking only in generalities (not being familiar with Fords of any kind), EGR systems fall victim to damaged vacuum lines occasionally, so check those. They can also clog up with carbon enough to fail to operate properly. Neither would normally happen in so few miles, but if the load was heavy enough, I suppose the enrichment program might lead to the ...


1

Take a look here, this may help you... ABS Diagnostic Code Retrieval


1

Also if the converter is actually degraded, the downstream o2 sensor output will start to look more like the upstream one - it will switch from high to low voltage on a regular basis instead of staying more steady at a constant voltage.



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