Rough idle

[sdk131]

As a few others mentioend above mine idles so smooth that I have to look at the tach to confirm it is running if I have the radio on or the hvac fan. I do think it is running smoother on the last two fillups (with 87) where I went to a Shell versus the discount grocery store pumps. Could have just been the shell station had already swiched over from the winter gas.

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[Gary Cox]

I was sitting in drive thru this evening when I noticed my Jeep started idling
rough looked at the RPM gauge, but it stayed steady, soon after the check engine light started flashing when I got to the main road and was able to give it more throttle the engine light stopped flashing and went off. So I checked for a code when I got home and it gave me a P0304 misfire on cylinder 4 I cleared the code gonna wait and see if it comes back.