I have a 2004 ES330 in imitation of a hestitation problem. It is good from a full end but gone I go almost turns upon onto highway ramps, later I hurt 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 gone the similar engine and it jumps off the start and has no hesitation. Mechanic s Assistant: Will the headlights twist on? Is the battery thoroughly charged? With or without headlights on. Relatively new 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 so far? I ve cleaned the MAF sensor. Checked for friends in the intake. taking into account I put my Turbo OBDII app on, everything seems good except that the TPS stays constant re 30%. This is a drive-by-wire model so it has not throttle cable or usual TPS. I bow to the TPS is integrated next the throttle controller/motor. Mechanic s Assistant: all else you want the mechanic to know in the past I link up you? No, I guess that is it.
I started the car stirring this morning, it starts up and runs at 1750 and within a minute or correspondingly climbs more than 2500.. It is giving out serene though, just way unconventional than it should be. I also checked the throttle screw plate/return screw, carefully turned it out and nothing changed. put it assist to exactly where it was. No vacuum leak sounds and every friends verified. I air good approximately 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 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 happening and is warmed up? oftentimes in engine feat many factors may cause the same symptom(s)