I have a 2004 ES330 like a hestitation problem. It is good from a full end but later I go roughly speaking turns upon onto highway ramps, with I afflict the accellarator (sp?) it hesitates for 2 seconds before reving up. I ve taken it to a mechanic and he says it is normal. I have an 2003 Avalon afterward the thesame engine and it jumps off the begin and has no hesitation. Mechanic s Assistant: Will the headlights outlook on? Is the battery fully charged? With or without headlights on. Relatively further 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 friends in the intake. with I put my Turbo OBDII app on, everything seems fine 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 agree to the TPS is integrated with the throttle controller/motor. Mechanic s Assistant: everything else you desire the mechanic to know before I be close to 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 reach a fast malformation locate if you unplug the meter and run the engine without it. if the engine condition is the similar subsequently chances are the meter or the relationship to it is faulty. Its as a consequence worth cleaning the MAF sensor wires, as they can get coated similar to dirt beyond grow old which later offsets the reading. Use some read cleaner or brake cleaner to vaporizer onto the wires to cut off the dirt on no account be adjacent to the wires later than whatever as they are definitely fragile
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you stirring to date upon every maintenance; spark plugs fuel filter pcv vlave etc? have you performed a visual inspection and listened to engine as it warms taking place and is warmed up? oftentimes in engine pretend many factors may cause the same symptom(s)