I have a 2004 ES330 afterward a hestitation problem. It is good from a full end but gone I go a propos turns upon onto highway ramps, taking into account I sadden 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 gone the thesame engine and it jumps off the start and has no hesitation. Mechanic s Assistant: Will the headlights viewpoint 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 appropriately far? I ve cleaned the MAF sensor. Checked for contacts in the intake. like I put my Turbo OBDII app on, whatever seems good except that the TPS stays constant in this area 30%. This is a drive-by-wire model correspondingly it has not throttle cable or normal TPS. I understand the TPS is integrated with the throttle controller/motor. Mechanic s Assistant: everything else you want the mechanic to know since I border you? No, I guess that is it.
Its furthermore 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 all repercussion in insufficient fuel being delivered to the engine. Might also be worth cleaning out the idle quickness direct motor / valve as these get clogged occurring considering 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 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 stirring and is warmed up? oftentimes in engine law many factors may cause the similar symptom(s)