white venom

alright, when my buddy drives his 02 gt, at idles really rough and brings the rpms from 680rpms directly to 400rpms then it goes back up, does this constantly... when hes driving normal on the highway in 5th gear the car feels groggy and spits... but at WOT its completely fine..

i popped a code at autozone , then this is what it said:::

it says in bank 1 i have a misfire, vaccum leak, fuel injector, maf sensor dirty, or high or low fuel pressure... it could be any one of these things...

so has anyone expiernced this problem? if so please help me out. thanks.

Racing2fast

My 4.6 04 F150 was doing the same thing, I ran a few bottles of Chevron W/Techron through the gas, cleaned the MAF Sensor, and took the TB off and cleaned all the carbon build up off of it. Put it back together, disconnectd the battery for 10min, re-connected and ViOLA, no issues and that's been 20k miles ago.

Hope that helps, I did the same thing on my 00 Stang with 145k when I picked it up a few months back, it runs better as well.

Could be the IAC also? But I havent ever had to replace that.