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Dfishman76 02-16-2013 08:22 AM

97 tj
Just got a 97 TJ and its hooked up but this motor runs rough at idle and ideas on where to start looking. It's a 4 bagger

T2000J 02-16-2013 08:31 AM

Tune up be the first thing I would do

Shark_13 02-16-2013 01:55 PM

Yup, plugs, cap and rotor, maybe wires, oil change, air filter if needed. Go from there.

scott howard 02-16-2013 03:32 PM

congrats on the new Jeep.
you need to take off and clean the throttle body really good ( you can find many detailed instructions on here just do a search. you also need to replace the iac ( idle air control )
and tps ( throttle position sensor ) both located on the throttle body and you will have them off while your cleaning it any ways.
also if it was me i would replace the up stream o2 sensor
feel free to give me a call if you have any question as you do these.
The good thing about owning a Jeep is the it will make you a master mechanic but it is the best classroom training you will ever get

Dfishman76 02-16-2013 03:57 PM

It only does it after its warmed up or should I say it does it worst when it's warmed up. The guy that had it before me replace plugs wire and cap but nit the button. When I got it there where 2 volts missing of the manifold so I replaced them. The word I got from him was the motor has been rebuilt maybe 10,000 miles ago not sure how much of a rebuild was done.

Dfishman76 02-23-2013 09:58 PM

Was the manifold. Was almost broken into from being cracked

DARCSHADE 02-24-2013 05:49 AM

I keep having trouble with the manifold coming loose on my 97. The first time it actually sheered off the rear bolt on the drivers side.

Dfishman76 02-25-2013 05:55 AM

Everyone of the bolts on mine where loose but 2 of them. I have not put but a hundred miles on it since I changed mine out will let you know if these start backing out. If the do I might put some thread lock on them

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