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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 ...


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.


3

The first thing to do is too take the EGR out of circuit. A quick and easy way to do this is to cut an old metal oil can(its thin enough for scissors) so you have a piece of the can that will fit between the bolts of the EGR. Tighten the EGR bolts up with the can acting as a gasket. Now try watching the MAF sensor voltage as you rev the engine sharply and ...


2

You can try replacing the Engine Crank Angle Sensor, which I believe is the one which is playing erratic. The sensor looks like this: So it is the one you are looking at in the picture. Who knows why it's gone bad, but with the code you mentioned, this seems like the culprit. This is a very good video on the replacement of the sensor. The only thing I'd ...


2

First of all, no worries on the bad English side of things ... even those of us who speak it have issues sometimes! '-) As to your issue(s) ... the first thing I do when I've encountered a large number of codes as you've gotten is clear the computer, then rerun the engine to see which codes persist. This gets you a lot closer to the root cause of the issue. ...


2

I spoke with a few friends who do their own car repairs or who are professional mechanics. Their recommendation with any OBDII device is to capture any data that the device can capture and log it as long as the device or connected computer/tablet/phone can log it. It is better to have a data point and not need it than to need a data point and not have it.


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 problems you are experiencing will have nothing to do with the transmission. Here is what the code explanation is. My feeling is it's with the Fuel pump driver module. It may be going bad. Code: P1233 - Fuel System Disabled or Offline Description: The PCM monitors the fuel pump monitor (FPM) circuit from the fuel pump driver module (FPDM). With ...


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

I don't have a solution specific to your car, but you may want to swing by your local auto parts store. They often have code readers on hand that they will use to read your codes for free. No idea if they'd have one that can do ABS codes on an OBD-I Volvo, but...


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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