Question about 1998 Jeep Cherokee

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Intermitant power when excelerating

Living in Baja CS, Mexico...Just had it completely serviced by a reputable mechanic with the computer diagnostics equipment (we've used him several times in the past and was very pleased with his knowledge)
He found nothing showing up on the computer checking system and checked all electric, sensors...etc etc.

After oil change, new fuil pump and filters,new spark plugs, wires, cleaned carborator, and all sensors...
I still have the same problem. It doesn't happen all the time.

When accelerating....with even pressure on the gas pedal...it hesitates and makes a chugging noise underneath the car.

He says that he thinks it is the catylitic converter...here in Baja...where the jeep will stay...the often cut them out and replace it with pipe.

Is this ok to do?
Will it harm the Jeep?
Will it give better or less milage on fuel?

yes, i am a woman...with very little knowledge of these things and have been getting contradictory advice from my local amigos. ???

I have an appointment tomorrow with another more local friend to have the trany fluid changed along with the transfer case etc etc.
Should i have him take off the catylitic converter ?

Thanks so much...Deborah




Posted by on

  • debinbaja Jan 09, 2009

    thundergod

    This is an incredible sight and those of you out there, who are such a part of it, should be applauded.

    I will be taking this info to my mechanic in the morning.

    Thanks for your prompt reply.

    Happy New Year

    debinbaja


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  • Jeep Master
  • 6,982 Answers

As long as it's legal there to remove cat, it if just fine to do that. However, I don't think thats where you will find the problem. Have your mechanic check the backlash on the timing chain (assuming its a 4.0) If chain wears beyond a certain point the cam sensor and crank sensor begin to go out of phase, severely messing with engine timing. This will give you the symptoms you have posted.If the cat was bad, you would hear a wheezing from the exhaust in most cases. How much backlash? I dont remember anyone but me doing this test, but I don't like to see more than ten crankshaft degrees of turn before rotor in dist starts moving. (when turned by hand, crank at 0, backwards) PS don't let em know your a gril ore theyl taken advantage of ya!!!
Good luck!!

Posted on Jan 08, 2009

  • Richard Scordino Jan 09, 2009

    Dear Deb... Glad to be of service, I hope what I told you will help.
    How about you send us some of that warm air you have over there! It's 11 degrees outside!!!!!!!


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