i need help i have a 98 lexus es 300 1mzfe

it has a acceleration problem from stop or roll , stumbles during idling like the engine flow just randomly breaks off for half a second back to back it worstens sometimes if you turn the wheel and sometimes turning the wheel wont do anything? ive found oil sitting in the air tube that connects to the maf and front part of the v6 via hose with clamps the piece which the throttle body and themaf connect to via intake tubing ... the idle air control valve is so wet and crude screws from looks like oil from throttle body cleaning is it possible for it to be full of gunk inside?..... during the cleaning of the intake i removed the big piece filled with oil at the bottom shook it out cleaned the hose that went from the piece to the front side of thengine re clammped it all tightened the throttle body tubes and closed the airfilterbox forgot to plug the iacv plug back in this is where my issue became 80 percent more harsh hitting the gas sounded like violent spitting, thats what happens whens its plugged just very slight like a dead spot between 1-2 thousand rpms and sputtering during acceleration like a skip in the engine flow but with it unplugged its way way worst,

could this be also a clogged up egr valve

clogged fuel injector?

coolant temp sensor?


so so lost for a month now the problems makes me not want to drive i think about this issue alot and my car is the only thing i have going for me right now


engine codes : po125 - insufficent coolant temperature for closed loop fuel control
po135 - bank 1 sensor one o2 sensor

 

I would suggest going to a lexus forum for an answer.

 

X2. hit a lexus forum. That engine doesn't even ring a bell as a common engine to swap into a A Toyota. Yes Toyota and lexus is basically the same company.