I have a 2004 ES330 considering a hestitation problem. It is fine from a full end but afterward I go all but turns upon onto highway ramps, with I hurt the accellarator (sp?) it hesitates for 2 seconds since 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 start and has no hesitation. Mechanic s Assistant: Will the headlights slant 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 in view of that far? I ve cleaned the MAF sensor. Checked for associates in the intake. when I put my Turbo OBDII app on, all seems good except that the TPS stays constant just about 30%. This is a drive-by-wire model as a result it has not throttle cable or normal TPS. I endure the TPS is integrated as soon as the throttle controller/motor. Mechanic s Assistant: whatever else you desire the mechanic to know past I be next to you? No, I guess that is it.
Its next worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a below par pump will every consequences in insufficient fuel inborn delivered to the engine. Might in addition to be worth cleaning out the idle speed govern motor / valve as these acquire clogged stirring in imitation of carbon and some brake cleaner washed through helps pardon things off.
in the manner of I begin the car, the engine surges stirring amid 1200 and 2000 rpm incite and forth. I misused the IAC and the TPS taking into account no fine-tune in symptoms. I have noticed that several Lexus SC's have this same issue. Prior to this I would have to acclimatize the idle speed screw to lower the rpm and it would maintain for a while. Now, the engine is for all time surging to the lessening where I cannot steer it for terror of broken to the drive train. Any experienced solution?