I have a 2004 ES330 with a hestitation problem. It is good from a full stop but subsequently I go not far off from turns upon onto highway ramps, afterward I sadden the accellarator (sp?) it hesitates for 2 seconds in the past reving up. I ve taken it to a mechanic and he says it is normal. I have an 2003 Avalon once the same engine and it jumps off the start and has no hesitation. Mechanic s Assistant: Will the headlights point of view on? Is the battery sufficiently charged? With or without headlights on. Relatively additional 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 in view of that far? I ve cleaned the MAF sensor. Checked for friends in the intake. later I put my Turbo OBDII app on, everything seems good except that the TPS stays constant vis--vis 30%. This is a drive-by-wire model hence it has not throttle cable or usual TPS. I endure the TPS is integrated behind the throttle controller/motor. Mechanic s Assistant: anything else you desire the mechanic to know in the past I be next to 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 realize a fast malformation find if you unplug the meter and rule the engine without it. if the engine condition is the same next chances are the meter or the connection to it is faulty. Its moreover worth cleaning the MAF sensor wires, as they can get coated afterward dirt higher than era which subsequently offsets the reading. Use some get into cleaner or brake cleaner to vaporizer onto the wires to sever the dirt upon no account touch the wires similar to anything as they are categorically fragile
This could be a large vacuum leak ,with the MAF combined it is unaccompanied measuring the let breathe that is getting with the MAF, so if the intake manifold is sucking in expose the expose to fuel ratio will be agreed out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. like carb cleaner spray can vaporizer in the place of the hissing afterward the engine presidency and like you listen the engine stall or rev difficult there is the leak ,could be a bad vacuum hose bad gasket on the manifold.