I have a 2004 ES330 once a hestitation problem. It is good from a full stop but in imitation of I go approximately turns on onto highway ramps, later I depress the accellarator (sp?) it hesitates for 2 seconds before reving up. I ve taken it to a mechanic and he says it is normal. I have an 2003 Avalon taking into consideration the similar engine and it jumps off the start and has no hesitation. Mechanic s Assistant: Will the headlights point of view on? Is the battery fully 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 suitably far? I ve cleaned the MAF sensor. Checked for contacts in the intake. later I put my Turbo OBDII app on, all seems fine except that the TPS stays constant on the subject of 30%. This is a drive-by-wire model so it has not throttle cable or usual TPS. I admit the TPS is integrated bearing in mind the throttle controller/motor. Mechanic s Assistant: everything else you want the mechanic to know previously I border you? No, I guess that is it.
I did re-check them tho. The master tech did extensive tests on the freshen flow meter and said it was good. in the same way as I unplug it and rule the motor, the car runs rude and at 850ish. I can and no-one else guess that my additional rebuilt ecu has an issue, or the tps needs to be re-adjusted, or anyhow my maf has died in the midst of every this. I don't think the tps has that much rule in the swing of rpm though? I think it and no-one else adjusts it with reference to 1k..
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you in the works 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 up and is warmed up? oftentimes in engine pretend many factors may cause the thesame symptom(s)