Woo its been a while since Ive been on here haha... I have a bad Idle air sensor... or so they say... my truck idles quite high... around 1000 rpm so I guess that makes sense...

but....

Would that affect the fact that my truck shifts gears at around 4000 when florring it on the highway, or otherwise it takes a while to shift on regular roads...

What oculd be my problem?

Thanks guys