mileage is around 149,000. I cleaned the MAF sensor but not the throttle body or MAF. I have never bought a new idle air controller. Nor a air cleaner. I just replaced all the plugs and the coil packs on bank 1 & 2. I wouldn't think I got bad gas but I don't know... I just ran a bottle of seafoam through the gas tank about 3 or 4 tanks ago. I cleaned the MAF sensor today and the problem went away for a couple minutes.
You guys think I should get some carb cleaner and clean the throttle body? Is there a way to check if the idle air controller is good?
I have no way to find vacuum leaks other than by ear and honestly I don't have enough experience in that area to determine if I have a vacuum leak or not.
Going out to the truck to try to spin the alternator bolt now...
THANK YOU ALL for ALL the help!! I know that a rough idle is hard to diagnose through the internet and I appreciate your guys time and patience! Thinking it might be best for me to take a video and post it?
I have a catalytic converter cleaner in the fuel system now... because of the check engine codes P0420 & P0430 AND I am hearing some rattling coming from the catalytic converter area under the truck that seems to almost match the fluctuation of the voltage if that makes sense...
I am going out now to spin the alternator bolt. Would a tensioner that is this hard to tell if it's bad or not actually cause a rough idle like this?