Idle Probs on a V6
 

Hey guys. I have a daily driver V6 and the idle is sometimes going up and down. I replaced the IAC and nothing. wasted 200 bucks on that. any other possibilities why that is?

on a red light sometimes the car idles at 1000rpm or worse sometimes 1200-1500rpm. its killing my MPG.

thanks.

stock 2000 V6 with auto tranny.

hmm...try the maf...check to make sure its plugged in

any mods to the thing?

nah dude... none. the car is totally stock. well except for the K&N filter. is that the throttle body??

nope, its the black thing before the throttle body and after the filter. i believe it's inside or right after the filter on the air housing. i've heard about them getting covered with oil from k&n's over time. sometimes my car will idle high, like you said around 1200 rpm's or so after i start it up, but if i tap the gas pedal it'll go right back down to where it's suppose to be, have you tried tappin' the pedal? also is the a/c on when it idles high?