I have a 2004 ES330 later a hestitation problem. It is fine from a full stop but next I go approaching turns on onto highway ramps, in imitation of I hurt the accellarator (sp?) it hesitates for 2 seconds since reving up. I ve taken it to a mechanic and he says it is normal. I have an 2003 Avalon taking into consideration the same engine and it jumps off the begin and has no hesitation. Mechanic s Assistant: Will the headlights face on? Is the battery sufficiently charged? With or without headlights on. Relatively other battery. Mechanic s Assistant: What is the model of your 04 Lexus? ES330 Mechanic s Assistant: Are you fixing your vehicle yourself? What have you tried for that reason far? I ve cleaned the MAF sensor. Checked for links in the intake. considering I put my Turbo OBDII app on, whatever seems good except that the TPS stays constant as regards 30%. This is a drive-by-wire model so it has not throttle cable or normal TPS. I understand the TPS is integrated in the manner of the throttle controller/motor. Mechanic s Assistant: everything else you want the mechanic to know back I border you? No, I guess that is it.
Might afterward be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can attain a fast malformation find if you unplug the meter and control the engine without it. if the engine condition is the similar next chances are the meter or the relationship to it is faulty. Its furthermore worth cleaning the MAF sensor wires, as they can get coated in the same way as dirt greater than grow old which after that offsets the reading. Use some admittance cleaner or brake cleaner to spray can onto the wires to separate the dirt upon no account be adjacent to the wires gone everything as they are totally fragile
This could be a large vacuum leak ,with the MAF united it is and no-one else measuring the ventilate that is getting in the same way as the MAF, hence if the intake manifold is sucking in air the ventilate to fuel ratio will be unconditionally out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. afterward carb cleaner spray can spray in the area of the hissing in the same way as the engine running and following you listen the engine stall or rev complex there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.