I have a 2004 ES330 in the manner of a hestitation problem. It is fine from a full end but similar to I go approximately turns upon onto highway ramps, later I afflict 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 like the similar engine and it jumps off the begin and has no hesitation. Mechanic s Assistant: Will the headlights point of view on? Is the battery adequately 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 consequently far? I ve cleaned the MAF sensor. Checked for contacts in the intake. as soon as I put my Turbo OBDII app on, everything seems fine except that the TPS stays constant vis--vis 30%. This is a drive-by-wire model in view of that it has not throttle cable or usual TPS. I admit the TPS is integrated similar to the throttle controller/motor. Mechanic s Assistant: anything else you want the mechanic to know previously I be next to 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 pull off a quick oddity locate if you unplug the meter and rule the engine without it. if the engine condition is the similar next chances are the meter or the connection to it is faulty. Its afterward worth cleaning the MAF sensor wires, as they can get coated subsequently dirt more than period which then offsets the reading. Use some entre cleaner or brake cleaner to spray can onto the wires to surgically remove the dirt upon no account be next to the wires next anything as they are unquestionably fragile
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you up 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 bill many factors may cause the similar symptom(s)