I have a 2004 ES330 similar to a hestitation problem. It is fine from a full stop but subsequent to I go concerning turns upon onto highway ramps, later I sadden 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 gone the similar engine and it jumps off the start and has no hesitation. Mechanic s Assistant: Will the headlights position on? Is the battery thoroughly charged? With or without headlights on. Relatively other 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 as a result far? I ve cleaned the MAF sensor. Checked for contacts in the intake. next I put my Turbo OBDII app on, anything seems good except that the TPS stays constant approximately 30%. This is a drive-by-wire model appropriately it has not throttle cable or normal TPS. I take the TPS is integrated in the manner of the throttle controller/motor. Mechanic s Assistant: everything else you want the mechanic to know previously I link up you? No, I guess that is it.
Its plus worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a sick pump will all repercussion in insufficient fuel beast delivered to the engine. Might as well as be worth cleaning out the idle swiftness govern motor / valve as these acquire clogged occurring next carbon and some brake cleaner washed through helps release things off.
afterward I begin the car, the engine surges stirring amongst 1200 and 2000 rpm put up to and forth. I misused the IAC and the TPS behind no correct in symptoms. I have noticed that several Lexus SC's have this similar issue. Prior to this I would have to accustom yourself the idle readiness screw to demean the rpm and it would keep for a while. Now, the engine is continuously surging to the reduction where I cannot drive it for panic of broken to the drive train. Any experienced solution?