I have a 2004 ES330 afterward a hestitation problem. It is good from a full stop but in imitation of I go almost turns upon onto highway ramps, subsequent to I depress the accellarator (sp?) it hesitates for 2 seconds past 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 point on? Is the battery adequately charged? With or without headlights on. Relatively new 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 associates in the intake. in the manner of I put my Turbo OBDII app on, all seems good except that the TPS stays constant concerning 30%. This is a drive-by-wire model for that reason it has not throttle cable or normal TPS. I acknowledge the TPS is integrated like the throttle controller/motor. Mechanic s Assistant: everything else you want the mechanic to know before I attach 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 do a quick deformity find if you unplug the meter and control the engine without it. if the engine condition is the same after that chances are the meter or the relationship to it is faulty. Its after that worth cleaning the MAF sensor wires, as they can get coated taking into consideration dirt beyond mature which then offsets the reading. Use some open cleaner or brake cleaner to vaporizer onto the wires to surgically remove the dirt on no account touch the wires in the same way as everything as they are very fragile
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you happening to date on every maintenance; spark plugs fuel filter pcv vlave etc? have you performed a visual inspection and listened to engine as it warms in the works and is warmed up? oftentimes in engine put it on many factors may cause the similar symptom(s)