post #1 of Old 04-27-2008, 07:52 AM Thread Starter
wrangleryjman
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2002 TJ Wrangler 
 
Join Date: Jun 2007
Location: upstate ny
Posts: 139
90 wrangler yj idle problem

hey i have a 90 wrangler 4.2 straight 6 and it wont idle everything above 2500 rpms is ok its the low end thats the problem. i have cleaned the idler tubes before and that was the problem thats prob what the problem again but even when i do that it doesnt idle steady it goes up and down. is there anything i can do to get it to idle better

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post #2 of Old 04-27-2008, 10:07 AM
timatoe
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1990 YJ Wrangler 
 
Join Date: Aug 2006
Location: Grass Valley California
Posts: 14,690
Get familiar with this site.. http://home.sprynet.com/~dale02/list.htm

Do this .. http://jeep.off-road.com/jeep/articl....jsp?id=277064 OR Buy this kit .. http://jeepcarterbbdcarb.com/kit.html

I did the kit and haven't had a problem since. If you can do the Nutter Bypass.

Quote:
Originally Posted by George Orwell
We sleep safe in our beds because rough men stand ready in the night to visit violence on those who would do us harm.
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post #3 of Old 04-28-2008, 02:42 PM
BlackSheep92
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1988 YJ Wrangler 
 
Join Date: Dec 2007
Location: South Jersey
Posts: 57
Excellent post

"Courage is not the absence of fear. It is the willingness to move forth despite it's presence"
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post #4 of Old 04-28-2008, 03:42 PM
ctm
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1990 YJ Wrangler 
 
Join Date: May 2007
Location: Boston MA
Posts: 1,447
I refer you to Mike Romain's posts regarding how the evap canister purge line can give inconsistent idle:

http://groups.google.com/group/rec.a...b145ada4f4c5f2

You can also search the CJ forum on this site for other similar posts.
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post #5 of Old 04-29-2008, 05:52 AM
vadslram
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1990 YJ Wrangler 
 
Join Date: Jan 2006
Location: VA Beach
Posts: 5,988
I fought with mine and could never keep the idle clean for more then a week. I replaced the stocker with an MC2100 and I havn't messed with the thing since I put it in. My milage went up too.
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