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Jeep Cherokee 1990 Oxygen sensor

Just bought a new O2 sensor for my jeep. It is a 4.0L 1990.

It uses a 3-wire type sensor. 1 for signal and 2 for the heater.

Now, the sensor I got had the wrong plug. Excactly oposite of what i should bee. So in fact I could plug the new sensor into the old sensor :-)

Well, I needed the sensor i place for my emission test so I transplanted the old plug onto the new sensor. I know the wires to the heater ar in the right place because this could be tested measuring about 5 ohm over connector A and B.

My question then is what are the chances this is working correctly? Anybody know what jeep the sensor I got fits to? Just worried if the signal is different than it should be.

The original sensor had a female connector and the new one a male connector if I remember correctly

regards Odd-Inge Larsen

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Odd-Inge Larsen
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BTW the new sensor looked like all metal and the old one had some sort of ceramic top like a spark plug.

regards Odd-Inge

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Odd-Inge Larsen

Checking on the net I found that the sensor I got most likly is for a four cylinder jeep Cherokee. There also is an image of a universal sensor on the page that fits both 6 cylinder and 4 cylinder jeep engine. But as I understand it there are two types of sensors, Titania and Zirconia and they are not interchangable. Hm....

regards Odd-Inge

Reply to
Odd-Inge Larsen

Your O2 sensor is under recall. You can get a new one installed for free if it hasn't already been done. We had our 88's done a few years ago.

I have heard bad things about the aftermarket sensors with the wrong plug. One thing is the insulation, you can't interfere with that or block it I think because the fresh air sample runs down it.

You also heard right that it (some are) is an odd ball sensor with power going to it.

Mike

86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail >
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Mike Romain

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bllsht

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