Question about 1996 Jeep Grand Cherokee

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O-2 Sensors on a 1996 Jeep V-8

Hi

I went to the library this evening and using Chilton Repair mauals, it stated that Chrysler engines manufactured after 1995 required at least 4 oxygen sensors: two on each bank, (named after the first cylinder firing order), another one in the exhaust pipe (in front of the catalytic converter) and the fourth, on the downstream flow, after it.

So, if your answer is correct..that there are only two... then you are telling me that Chrysler did not manufacture the 5.2 L V-8 engine in my Jeep.

Is that true?

Best regards

**** Owan d@owan.us is my e dress

PS: Thanks for your help. I don't know what to do now after I replaced that sensor (located underneath the chassis) and in the exhaust system, and still have the MIL light come on after the engine reaches operating temperatures. My Code Reader still insists it is a problem with a bank 1 O-2.




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  • d248 Jan 08, 2009

    Thanks



    I bought a Bosch, and took it back for credit. The new Mopar sensor didn't work either, so I'm looking for some other related issue.



    ****

  • d248 Jan 09, 2009

    Hi



    Archie said that after further anlysis, his mechanic was taking ohm readings on the socket---with the ignition on!!!



    Apparently he shorted the 12 v line input to either ground, or one of the other leads. The result was that he blew the fuse to that circuit.



    Therefore, we may never know if the Bosch O-2 sensor was bad, but we do know that the Mopar replacement (whether better or not) fixed the problem.



    ****

  • d248 Jan 09, 2009

    BCally1



    Thanks for the advice; however, you never did answer our question about who made the 5.2 L V-8 engine for our '96 Jeep Grand Cherokee.



    If it was Chrysler, why didn't they use the same method of installing 4 O-2 sensors, one on each manifold bank, one upstream before the Catalytic C, and the last one downstream after it, like they did for ALL Chrysler V-8 cars produced after 1995"



    ****

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According to dealerconnect which is chryslers tech site there are two. one before the cat and one after. did you replace it with a mopar sensor or with aftermarket. i had a vehicle with aftermarket sensors and the vehicle would barely run. i replaced them with mopar sensors, and it fixed it

Posted on Jan 08, 2009

  • brian calhoon
    brian calhoon Jan 09, 2009

    same engine that was installed in the trucks. dont know why there are only two but i believe the trucks to be the same way

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