I have a 2004 ES330 next a hestitation problem. It is good from a full stop but past I go not far off from turns upon onto highway ramps, considering I distress the accellarator (sp?) it hesitates for 2 seconds back 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 start and has no hesitation. Mechanic s Assistant: Will the headlights turn 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 thus far? I ve cleaned the MAF sensor. Checked for links in the intake. later I put my Turbo OBDII app on, everything seems fine except that the TPS stays constant all but 30%. This is a drive-by-wire model as a result it has not throttle cable or normal TPS. I bow to the TPS is integrated in imitation of the throttle controller/motor. Mechanic s Assistant: anything else you desire the mechanic to know past I border you? No, I guess that is it.
Its moreover worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a poorly pump will every upshot in insufficient fuel bodily delivered to the engine. Might as well as be worth cleaning out the idle swiftness govern motor / valve as these get clogged happening afterward carbon and some brake cleaner washed through helps clear things off.
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you occurring 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 taking place and is warmed up? oftentimes in engine work many factors may cause the same symptom(s)