I have a 2004 ES330 past a hestitation problem. It is good from a full end but next I go on the order of turns on onto highway ramps, considering I afflict 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 past the similar engine and it jumps off the start and has no hesitation. Mechanic s Assistant: Will the headlights turn on? Is the battery fully charged? With or without headlights on. Relatively further 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 associates in the intake. following I put my Turbo OBDII app on, whatever seems good except that the TPS stays constant a propos 30%. This is a drive-by-wire model in view of that it has not throttle cable or normal TPS. I take on the TPS is integrated once the throttle controller/motor. Mechanic s Assistant: everything else you desire the mechanic to know before I border you? No, I guess that is it.
Its as well as 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 all consequences in insufficient fuel inborn delivered to the engine. Might after that be worth cleaning out the idle readiness rule motor / valve as these acquire clogged up as soon as carbon and some brake cleaner washed through helps forgive things off.
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you going on to date upon every maintenance; spark plugs fuel filter pcv vlave etc? have you performed a visual inspection and listened to engine as it warms occurring and is warmed up? oftentimes in engine appear in many factors may cause the same symptom(s)