I have a 2004 ES330 taking into account a hestitation problem. It is fine from a full stop but next I go on turns upon onto highway ramps, behind I pain 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 subsequently the thesame engine and it jumps off the begin and has no hesitation. Mechanic s Assistant: Will the headlights turn on? Is the battery sufficiently 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 so far? I ve cleaned the MAF sensor. Checked for friends in the intake. later I put my Turbo OBDII app on, everything seems fine except that the TPS stays constant a propos 30%. This is a drive-by-wire model therefore it has not throttle cable or usual TPS. I resign yourself to the TPS is integrated once the throttle controller/motor. Mechanic s Assistant: everything else you want the mechanic to know in the past I be close to you? No, I guess that is it.
Might with be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can get a fast deviation locate if you unplug the meter and govern the engine without it. if the engine condition is the same next chances are the meter or the attachment to it is faulty. Its plus worth cleaning the MAF sensor wires, as they can get coated behind dirt exceeding period which then offsets the reading. Use some retrieve cleaner or brake cleaner to spray onto the wires to remove the dirt upon no account lie alongside the wires gone everything as they are entirely fragile
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you going on 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 happening and is warmed up? oftentimes in engine enactment many factors may cause the thesame symptom(s)