I have a 2004 ES330 in the same way as a hestitation problem. It is fine from a full end but later than I go as regards turns on onto highway ramps, gone I depress the accellarator (sp?) it hesitates for 2 seconds back reving up. I ve taken it to a mechanic and he says it is normal. I have an 2003 Avalon with the thesame engine and it jumps off the begin and has no hesitation. Mechanic s Assistant: Will the headlights direction on? Is the battery fully 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 correspondingly far? I ve cleaned the MAF sensor. Checked for friends in the intake. as soon as I put my Turbo OBDII app on, everything seems fine except that the TPS stays constant regarding 30%. This is a drive-by-wire model appropriately it has not throttle cable or usual TPS. I recognize the TPS is integrated behind the throttle controller/motor. Mechanic s Assistant: everything else you desire the mechanic to know back I attach you? No, I guess that is it.
I started the car taking place this morning, it starts taking place and runs at 1750 and within a minute or hence climbs more than 2500.. It is dispensation mild though, just quirk forward-looking than it should be. I as a consequence checked the throttle screw plate/return screw, carefully turned it out and nothing changed. put it help to exactly where it was. No vacuum leak sounds and every contacts verified. I tone fine approximately them as I've been in there a bunch of times..
with I start the car, the engine surges occurring together with 1200 and 2000 rpm back and forth. I misused the IAC and the TPS in imitation of no alter in symptoms. I have noticed that several Lexus SC's have this same issue. Prior to this I would have to get used to the idle rapidity screw to humiliate the rpm and it would retain for a while. Now, the engine is until the end of time surging to the tapering off where I cannot drive it for startle of broken to the steer train. Any experienced solution?