I have a 2004 ES330 later than a hestitation problem. It is fine from a full stop but when I go in this area turns upon onto highway ramps, when I sadden 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 bearing in mind the thesame engine and it jumps off the begin and has no hesitation. Mechanic s Assistant: Will the headlights direction on? Is the battery fully 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 appropriately far? I ve cleaned the MAF sensor. Checked for friends in the intake. taking into consideration I put my Turbo OBDII app on, whatever seems good except that the TPS stays constant re 30%. This is a drive-by-wire model so it has not throttle cable or normal TPS. I give a positive response the TPS is integrated next the throttle controller/motor. Mechanic s Assistant: anything else you desire the mechanic to know before I border you? No, I guess that is it.
Might along with be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can pull off a quick irregularity 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 as a consequence worth cleaning the MAF sensor wires, as they can acquire coated similar to dirt over times which next offsets the reading. Use some admittance cleaner or brake cleaner to spray onto the wires to separate the dirt on no account be adjacent to the wires as soon as everything as they are no question fragile
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you taking place to date upon all maintenance; spark plugs fuel filter pcv vlave etc? have you performed a visual inspection and listened to engine as it warms happening and is warmed up? oftentimes in engine operate many factors may cause the same symptom(s)