I have a 2004 ES330 subsequent to a hestitation problem. It is fine from a full end but taking into account I go on the subject of turns upon onto highway ramps, in the manner of I sadden 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 similar to the thesame engine and it jumps off the start and has no hesitation. Mechanic s Assistant: Will the headlights slant on? Is the battery abundantly 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 associates in the intake. in imitation of I put my Turbo OBDII app on, all seems fine except that the TPS stays constant in the region of 30%. This is a drive-by-wire model suitably it has not throttle cable or normal TPS. I endure the TPS is integrated in the same way as the throttle controller/motor. Mechanic s Assistant: everything else you want the mechanic to know in the past I link up you? No, I guess that is it.
I started the car up this morning, it starts happening and runs at 1750 and within a minute or thus climbs greater than 2500.. It is dealing out serene though, just mannerism well along than it should be. I furthermore checked the throttle screw plate/return screw, with intent turned it out and nothing changed. put it encourage to exactly where it was. No vacuum leak sounds and every contacts verified. I setting good more or less them as I've been in there a bunch of times..
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you taking place 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 be in many factors may cause the same symptom(s)