I have a 2004 ES330 considering a hestitation problem. It is good from a full stop but considering I go in this area turns upon onto highway ramps, next I upset 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 similar 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 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 as a result far? I ve cleaned the MAF sensor. Checked for links in the intake. when I put my Turbo OBDII app on, anything seems fine except that the TPS stays constant a propos 30%. This is a drive-by-wire model as a result it has not throttle cable or normal TPS. I give a positive response the TPS is integrated later the throttle controller/motor. Mechanic s Assistant: whatever else you desire the mechanic to know before I connect you? No, I guess that is it.
Its after that worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a not a hundred percent pump will every consequences in insufficient fuel subconscious delivered to the engine. Might plus be worth cleaning out the idle enthusiasm manage motor / valve as these acquire clogged going on gone carbon and some brake cleaner washed through helps clear things off.
later I begin the car, the engine surges taking place between 1200 and 2000 rpm back and forth. I changed the IAC and the TPS in imitation of no bend in symptoms. I have noticed that several Lexus SC's have this similar issue. Prior to this I would have to acclimatize the idle quickness screw to lower the rpm and it would sustain for a while. Now, the engine is permanently surging to the tapering off where I cannot drive it for panic of damage to the drive train. Any experienced solution?