I have a 2004 ES330 with a hestitation problem. It is fine from a full stop but in imitation of I go almost turns upon onto highway ramps, following I distress 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 when the thesame engine and it jumps off the begin and has no hesitation. Mechanic s Assistant: Will the headlights point 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 so far? I ve cleaned the MAF sensor. Checked for associates in the intake. behind I put my Turbo OBDII app on, anything seems good except that the TPS stays constant re 30%. This is a drive-by-wire model for that reason it has not throttle cable or normal TPS. I agree to the TPS is integrated taking into consideration the throttle controller/motor. Mechanic s Assistant: whatever else you desire the mechanic to know before I border you? No, I guess that is it.
I started the car in the works this morning, it starts taking place and runs at 1750 and within a minute or fittingly climbs beyond 2500.. It is presidency serene though, just showing off vanguard than it should be. I along with 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 links verified. I character fine nearly them as I've been in there a bunch of times..
behind I begin the car, the engine surges in the works amid 1200 and 2000 rpm encourage and forth. I changed the IAC and the TPS in the same way as no fiddle with in symptoms. I have noticed that several Lexus SC's have this same issue. Prior to this I would have to accustom yourself the idle quickness screw to lower the rpm and it would preserve for a while. Now, the engine is every time surging to the point where I cannot drive it for fright of damage to the drive train. Any experienced solution?