I have a 2004 ES330 in the same way as a hestitation problem. It is good from a full stop but behind I go around turns on onto highway ramps, like I distress 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 similar engine and it jumps off the begin and has no hesitation. Mechanic s Assistant: Will the headlights perspective on? Is the battery abundantly 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 thus far? I ve cleaned the MAF sensor. Checked for friends in the intake. as soon as I put my Turbo OBDII app on, whatever seems fine except that the TPS stays constant as regards 30%. This is a drive-by-wire model as a result it has not throttle cable or normal TPS. I bow to the TPS is integrated subsequently the throttle controller/motor. Mechanic s Assistant: all else you want the mechanic to know previously I attach you? No, I guess that is it.
I started the car taking place this morning, it starts stirring and runs at 1750 and within a minute or as a result climbs greater than 2500.. It is dealing out mild though, just mannerism well ahead than it should be. I then checked the throttle screw plate/return screw, carefully turned it out and nothing changed. put it incite to exactly where it was. No vacuum leak sounds and every links verified. I tone fine practically them as I've been in there a bunch of times..
I don't have any check engine lights unless I unplug the MAF sensor. when the MAF is plugged in later the car will stall unless I put my foot upon the accelerator. There is afterward an intermittent popping sound coming at idle.