Question about 1994 Jeep Wrangler

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1997 jeep wrangler 4.0 5 speed. stumbles under power only when cold. after five minutes of driving the problem goes away. The dealer replaced the Cat trying tto fix it. WE have put all new tune up parts on ***, we checked the fuel pressure, it was correct, and we even shot fuel to it when it was acting up to see if it was fuel related and it was'nt. Help!

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  • herdpm Oct 06, 2008

    I have the exact same problem... exactly. Haven't found a fix yet, it may possibly be an O2 sensor.

  • Anonymous Oct 28, 2008

    I was told by my mech. that if needs a software update in the electronic module?

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I had this problem with my 97 when it hit around 80,000 miles and it turned out to be a bad fuel injector. Replaced all 6 and it has been fine ever since.

Posted on Apr 15, 2009

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Replace the oxygen sensor with a dealer replacement, not an aftermarket, but one from the Jeep dealer. Problem will be solved. Not enough time to explain entire scenario, but have seen it about a dozen times.

Posted on Nov 12, 2008

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I have a 98, my check engine light came on while it was actin up, put a code reader on it and it told me it was the throttle position sensor.

Posted on Oct 27, 2008

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