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

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

"Odd-Inge Larsen" > wrote in message
...
> 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
>

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


"Odd-Inge Larsen" > wrote in message
...
> 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
>

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 in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

Odd-Inge Larsen wrote:
>
> 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

The 4.0L Renix system on your Cherokee uses a titania sensor.

On Mon, 2 Oct 2006 09:42:49 +0200, "Odd-Inge Larsen"
> wrote:

>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
>
>
>"Odd-Inge Larsen" > wrote in message
...
>> 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
>>
>