Question about 1992 Jeep Wrangler

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1992 Jeep wrangler will not stay running

I know that I need to change the catalytic converter and had a power issue initially from the clogging. Since then It was running fine and no loss of power until one day it died.

Now, I cannot keep the jeep running, it spits, sputters and backfires.

I removed the air cleaner and noticed the backfire is coming from there. I thought the exhaust was clogged but when trying to keep the jeep running I felt exhaust coming out of the rear tailpipe. Nothing appears to be clogged at the moment. Any thoughts?

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  • Richard Scordino May 11, 2010

    First, If the cat is bad, change it. Being plugged will mess with engine control systems that are responding to screwy readings because of that. Then go after anything else that's wrong!


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  • 32 Answers

Is engine light on. if so get code might cat conv not letting enough out. allowing to much backpressure

Posted on Sep 27, 2009

  • skipperfish Jan 13, 2011

    when the cat gets clogged it will cause all kind of codes and problems, my 2004 TJ threw a transmission control module fault code and the power got worse and worse unitl it would not go above 3200 rpms. Make sure you swap all of the oxygen sensors out when you replace the cat (on the 2004 there are four of them).


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You need to get the codes read to verify,but i think your in need of coil pack or wires.

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SOURCE: 93 wrangler spits sputters and backfires sometimes

when it hit 60/70 miles it spit sputters somtimes i change plugs , wires, cap still does the same
can you tell me what i need to look for.

thanks G man

Posted on Mar 04, 2011

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CAT would only get clogged if you were burning a lot of oil, is the tail pipe really black?
Run a compression check on the cylinders.
What condition were the plugs in when you removed them? They will help you trace the source of the problem. Local parts houses will run the diagnostics for you at their location if you can drive it there.

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