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Unread 03-07-2014, 08:46 AM   #31
Mpaule
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1998 TJ Wrangler 
 
Join Date: Feb 2014
Location: Tampa, FL
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Thanks to all for the suggestions. Unfortunately, transmission (which seemed to be in good shape a few weeks back) went out. So we will get that rebuilt first. No advance notice on this one - dealer shop said the aluminum sprockets inside were shot?? Entire rebuild about $1800. I think I am going to own this Jeep for awhile. :-)
As far as CEL issue, dealer shop's official response is they isolated to the cat - everything else (sensors, wiring, PCM, etc...) is fine - so once I get jeep operational I will have cat replaced again by Jeep aftermarket shop that installed it. Hoping that will do it.
I will keep our progress posted as perhaps it may help others out there in the future.

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Unread 03-07-2014, 11:52 AM   #32
SomeBeach
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So is it possible that the problem was the transmission all along? Your bogging down and shutting off could have been the tranny seizing up or causing resistance......and in the process of misdiagnosing the cat converter and replacing that, the o2 sensors and/or wires were screwed up creating new gremlins of throwing CELs and codes. Now that you've been on a wild goose chase for a while....the real problem comes back to rear its ugly head. Sure hope you get it all worked out.
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Unread 03-07-2014, 01:59 PM   #33
Mpaule
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Quote:
Originally Posted by SomeBeach View Post
So is it possible that the problem was the transmission all along? Your bogging down and shutting off could have been the tranny seizing up or causing resistance......and in the process of misdiagnosing the cat converter and replacing that, the o2 sensors and/or wires were screwed up creating new gremlins of throwing CELs and codes. Now that you've been on a wild goose chase for a while....the real problem comes back to rear its ugly head. Sure hope you get it all worked out.
Quite possible, although exhaust manifold repaired by dealer was cracked - and jeep ran noticeably better after that repair. And cat/muffler were well rusted when we removed them, and ran better & quieter post op, so I am going with the "things happen for a reason" theme on this one. I assume many jeeps need a tranny rebuild around 100K? But I am looking forward to driving this "brand new jeep".
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Unread 03-07-2014, 02:15 PM   #34
JStMarie
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Quote:
I assume many jeeps need a tranny rebuild around 100K?
I've never seen anything that indicates so. My '98 2.5L manual has 221k on it, all original equipment.
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Unread 03-07-2014, 04:32 PM   #35
Mpaule
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1998 TJ Wrangler 
 
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Originally Posted by JStMarie View Post
I've never seen anything that indicates so. My '98 2.5L manual has 221k on it, all original equipment.
Ours is automatic
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Unread 03-12-2014, 07:07 PM   #36
Mpaule
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1998 TJ Wrangler 
 
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Got our Jeep back today with overhauled transmission. $1800 parts & labor. Runs nice. Waiting for CEL to return (as it was reset), then its on to Jeep shop to replace cat under warranty. I am told everything else checks out, and that CEL returning is due to cat converter failure.
Will keep this thread posted until we figure out CEL.
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Unread 04-10-2014, 01:37 PM   #37
Mpaule
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1998 TJ Wrangler 
 
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Location: Tampa, FL
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Update on 4/10/2013 - appears that an intake air temperature sensor (IAT) - $33.00 part - is keeping the cel from returning on thus far. Jeep/chrysler dealer couldn't diagnose this. Aftermarket jeep shop did. Will see how it goes and update thread if necessary. Hope this helps others that are having cel issues.

Last edited by Mpaule; 04-12-2014 at 11:47 AM..
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Unread 04-21-2014, 03:28 PM   #38
Mpaule
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1998 TJ Wrangler 
 
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Update on Issue

Update on 4/21: CEL light returned after about 60 miles. Getting looked at again this week. Guess I am still open for any ideas here.
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Unread 05-22-2014, 08:53 AM   #39
Mpaule
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1998 TJ Wrangler 
 
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Location: Tampa, FL
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Final solution to the ongoing cel light continuing to light - first thing we did was to replace cat converter early on with aftermarket product. Cat was fine. Supllier/mfg failed to inform all that o2 sensors should be moved further away from each end of cat. This was done on our last trip to shop and no further problems have been encountered. Sure hope this may help someone out there who has similar problem with check engine light. It did force us to fix some necessary items on the jeep, but what a process.
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1998 , cel , check engine light , exhaust , wrangler

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