I have a 2004 ES330 in the same way as a hestitation problem. It is fine from a full stop but subsequent to I go approaching turns upon onto highway ramps, subsequent to I hurt the accellarator (sp?) it hesitates for 2 seconds back 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 begin and has no hesitation. Mechanic s Assistant: Will the headlights perspective 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 so far? I ve cleaned the MAF sensor. Checked for associates in the intake. gone I put my Turbo OBDII app on, anything seems good except that the TPS stays constant roughly speaking 30%. This is a drive-by-wire model as a result it has not throttle cable or normal TPS. I admit the TPS is integrated behind the throttle controller/motor. Mechanic s Assistant: whatever else you desire the mechanic to know since I link up you? No, I guess that is it.
Might as a consequence be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can accomplish a fast deviation find if you unplug the meter and manage the engine without it. if the engine condition is the same next chances are the meter or the relationship to it is faulty. Its afterward worth cleaning the MAF sensor wires, as they can acquire coated afterward dirt greater than times which then offsets the reading. Use some gain access to cleaner or brake cleaner to vaporizer onto the wires to separate the dirt on no account lie alongside the wires similar to everything as they are agreed fragile
This could be a large vacuum leak ,with the MAF joined it is only measuring the air that is getting as soon as the MAF, therefore if the intake manifold is sucking in expose the air to fuel ratio will be entirely out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. when carb cleaner spray can spray can in the area of the hissing subsequent to the engine meting out and taking into consideration you listen the engine stall or rev highly developed there is the leak ,could be a bad vacuum hose bad gasket on the manifold.
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