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Jeep Rough Idle

I have a 98 V6 jeep grand cherokee that after starting idles rough and sputters. When I start driving I have to punch the gas at first to get it going, but after driving for about a mile the problem goes away. I am thinking it may be the fuel pressure regulator. Any thought?

You can have the fuel pressure tested to see if the regulator is the problem. If the regulator is bad, however, how do you explain the fact that you have no problems once the engine starts to warm up?