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Very rough cold start/idle

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Old 07-26-2011, 03:51 PM
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Year: 1994
Model: Cherokee
Engine: 4.0L
Default Very rough cold start/idle

I just got my 1998 Limited 5.2l back from the transmission shop and it started having problems with a cold start.

It will idle very rough at first, moving from 300-400 rpm up to 1200 and keep bouncing back and forth.

Eventually after about 15 minutes it will smooth out.
What would cause this?
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