I have a 2004 ES330 behind a hestitation problem. It is fine from a full stop but similar to I go just about turns on onto highway ramps, once I afflict 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 in the manner of the similar engine and it jumps off the start and has no hesitation. Mechanic s Assistant: Will the headlights perspective on? Is the battery fully charged? With or without headlights on. Relatively supplementary 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 in view of that far? I ve cleaned the MAF sensor. Checked for connections in the intake. once I put my Turbo OBDII app on, all seems fine except that the TPS stays constant vis--vis 30%. This is a drive-by-wire model thus it has not throttle cable or usual TPS. I acknowledge the TPS is integrated following the throttle controller/motor. Mechanic s Assistant: anything else you want the mechanic to know since I connect you? No, I guess that is it.
I started the car in the works this morning, it starts in the works and runs at 1750 and within a minute or so climbs on top of 2500.. It is management smooth though, just mannerism superior than it should be. I with checked the throttle screw plate/return screw, with intent turned it out and nothing changed. put it back up to exactly where it was. No vacuum leak sounds and all associates verified. I air good nearly them as I've been in there a bunch of times..
afterward I begin the car, the engine surges happening amongst 1200 and 2000 rpm put up to and forth. I tainted the IAC and the TPS in imitation of no tweak in symptoms. I have noticed that several Lexus SC's have this thesame issue. Prior to this I would have to acclimatize the idle promptness screw to humiliate the rpm and it would retain for a while. Now, the engine is permanently surging to the reduction where I cannot steer it for scare of damage to the steer train. Any experienced solution?