- Nov 13, 2016
- 194
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So I was idling in the drive thru the other night and i noticed the idle was fluctuating it would drop down and sound like it might die then it would idle back up to normal. but probably every 30 seconds it would do that. i know the car needs plugs i can feel a slight miss when driving so im going to do plugs this evening and hope it helps, any ideas (99 Mustang GT 99,000)