Hey guys, Ive been having intermittent issues when stopping at red lights. Usual only when the van is at temp.

When it acts up the idle is around 550-600 rpm and in drive, it is rough and feels as though it trys to lurch forward. When this is happening and I put it in neutral the idle improves and all seems normal. Put it back in Drive and she gets rough again. If I accelerate most times it smooths out and is fine but the odd time it will sputter and then go.

Any thoughts? I thought maybe a transmission related thing considering when Its put in neutral it smooths out but who knows.... The computer side of these things is new to me, sensors etc .

Mechanically im good and will tackle anything, built my bronco from the ground up but the dam computers and senors interfering with good ol AFR has got me boggled!

Thanks