7th Gen ('06-'07): 2006 3.5L MC rough starting
#1
2006 3.5L MC rough starting
my 06 has been starting rough the past few weeks. it has 140,000 on it and is a FFV and i use E85. When i go to start it, i turn the key and it cranks over roughly and starts and idles rough. if i shut the car off (occasionally it stays running for another 1-2 seconds) and restart it, it idles 100% normal. It started a few weeks ago and i changed the plugs hoping it would help but it hasnt. I need some help on what could be causing this.
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