I have a 2004 ES330 later a hestitation problem. It is good from a full stop but considering I go approximately turns on onto highway ramps, with I upset 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 taking into account the similar engine and it jumps off the start and has no hesitation. Mechanic s Assistant: Will the headlights approach 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 so far? I ve cleaned the MAF sensor. Checked for friends in the intake. in the manner of I put my Turbo OBDII app on, anything seems fine except that the TPS stays constant on the subject of 30%. This is a drive-by-wire model suitably it has not throttle cable or normal TPS. I endure the TPS is integrated behind the throttle controller/motor. Mechanic s Assistant: all else you want the mechanic to know past I attach you? No, I guess that is it.
I started the car stirring this morning, it starts happening and runs at 1750 and within a minute or therefore climbs more than 2500.. It is executive serene though, just exaggeration well ahead than it should be. I with checked the throttle screw plate/return screw, intentionally turned it out and nothing changed. put it back up to exactly where it was. No vacuum leak sounds and every friends verified. I setting fine virtually them as I've been in there a bunch of times..
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you occurring 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 stirring and is warmed up? oftentimes in engine proceed many factors may cause the similar symptom(s)