I have a 2004 ES330 as soon as a hestitation problem. It is good from a full stop but taking into account I go on turns upon onto highway ramps, as soon as I distress 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 later the same engine and it jumps off the begin and has no hesitation. Mechanic s Assistant: Will the headlights aim on? Is the battery thoroughly charged? With or without headlights on. Relatively extra 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 appropriately far? I ve cleaned the MAF sensor. Checked for connections in the intake. subsequently I put my Turbo OBDII app on, everything seems good except that the TPS stays constant as regards 30%. This is a drive-by-wire model for that reason it has not throttle cable or normal TPS. I consent the TPS is integrated as soon as the throttle controller/motor. Mechanic s Assistant: anything else you want the mechanic to know in the past I border you? No, I guess that is it.
Its with worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a in poor health pump will every consequences in insufficient fuel bodily delivered to the engine. Might next be worth cleaning out the idle enthusiasm control motor / valve as these get clogged happening next carbon and some brake cleaner washed through helps pardon things off.
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you stirring to date on all maintenance; spark plugs fuel filter pcv vlave etc? have you performed a visual inspection and listened to engine as it warms happening and is warmed up? oftentimes in engine undertaking many factors may cause the thesame symptom(s)