I have a 2004 ES330 subsequently a hestitation problem. It is fine from a full end but gone I go approaching turns on onto highway ramps, once I sadden the accellarator (sp?) it hesitates for 2 seconds in the past reving up. I ve taken it to a mechanic and he says it is normal. I have an 2003 Avalon following the same engine and it jumps off the start and has no hesitation. Mechanic s Assistant: Will the headlights outlook 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 correspondingly far? I ve cleaned the MAF sensor. Checked for friends in the intake. like I put my Turbo OBDII app on, everything seems fine except that the TPS stays constant almost 30%. This is a drive-by-wire model so it has not throttle cable or normal TPS. I agree to the TPS is integrated in the same way as the throttle controller/motor. Mechanic s Assistant: anything else you desire the mechanic to know before I be next to 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 under the weather pump will every repercussion in insufficient fuel instinctive delivered to the engine. Might afterward be worth cleaning out the idle promptness control motor / valve as these get clogged happening considering carbon and some brake cleaner washed through helps release things off.
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you up to date upon all maintenance; spark plugs fuel filter pcv vlave etc? have you performed a visual inspection and listened to engine as it warms stirring and is warmed up? oftentimes in engine feint many factors may cause the similar symptom(s)