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.

You check for any codes? Last time it had a tune up,plugs/wires? Unplug your MAF and see if it runs better.