89 yj

jjones5

New member
ok the jeep is running better found some bad vacume lines but know it drives fine but when you idle it idles up and down at abot 1100 to 800 rpms cant find out what it is thaght mabe idle positioner sensor any ideas
 

Don't know.. I was going to say IAC motor, but it is a 89, is it the stock carb? a good rebuild might be in order.
 
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