I have a 2004 ES330 subsequently a hestitation problem. It is good from a full end but bearing in mind I go roughly speaking turns upon onto highway ramps, subsequent to I hurt 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 past the similar engine and it jumps off the start and has no hesitation. Mechanic s Assistant: Will the headlights approach on? Is the battery thoroughly charged? With or without headlights on. Relatively other 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 for that reason far? I ve cleaned the MAF sensor. Checked for connections in the intake. with I put my Turbo OBDII app on, all seems fine except that the TPS stays constant with reference to 30%. This is a drive-by-wire model suitably it has not throttle cable or normal TPS. I give a positive response the TPS is integrated afterward the throttle controller/motor. Mechanic s Assistant: everything else you desire the mechanic to know since I be next to you? No, I guess that is it.
Its as a consequence worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a ill pump will every repercussion in insufficient fuel swine delivered to the engine. Might with be worth cleaning out the idle swiftness control motor / valve as these get clogged going on with 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 in the works 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 up and is warmed up? oftentimes in engine play-act many factors may cause the similar symptom(s)