I have a 2004 ES330 behind a hestitation problem. It is good from a full end but considering I go going on for turns on onto highway ramps, as soon as I distress the accellarator (sp?) it hesitates for 2 seconds previously reving up. I ve taken it to a mechanic and he says it is normal. I have an 2003 Avalon later the same engine and it jumps off the start and has no hesitation. Mechanic s Assistant: Will the headlights slope on? Is the battery sufficiently charged? With or without headlights on. Relatively supplementary 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 fittingly far? I ve cleaned the MAF sensor. Checked for associates in the intake. in the manner of I put my Turbo OBDII app on, everything seems fine except that the TPS stays constant with reference to 30%. This is a drive-by-wire model for that reason it has not throttle cable or normal TPS. I resign yourself to the TPS is integrated afterward the throttle controller/motor. Mechanic s Assistant: anything else you want the mechanic to know in the past I border you? No, I guess that is it.
Might in addition to be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can do a quick oddity find if you unplug the meter and manage the engine without it. if the engine condition is the similar next chances are the meter or the membership to it is faulty. Its afterward worth cleaning the MAF sensor wires, as they can get coated later dirt beyond period which then offsets the reading. Use some open cleaner or brake cleaner to spray can onto the wires to sever the dirt on no account touch the wires afterward whatever as they are agreed fragile
This could be a large vacuum leak ,with the MAF connected it is and no-one else measuring the freshen that is getting in imitation of the MAF, for that reason if the intake manifold is sucking in air the expose to fuel ratio will be extremely out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. in imitation of carb cleaner spray can spray in the area of the hissing when the engine meting out and in imitation of you hear the engine stall or rev forward-looking there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.