I have a 2004 ES330 next a hestitation problem. It is good from a full end but with I go re turns upon onto highway ramps, behind I afflict the accellarator (sp?) it hesitates for 2 seconds in the past reving up. I ve taken it to a mechanic and he says it is normal. I have an 2003 Avalon afterward the same engine and it jumps off the start and has no hesitation. Mechanic s Assistant: Will the headlights direction on? Is the battery fully charged? With or without headlights on. Relatively further 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 in view of that far? I ve cleaned the MAF sensor. Checked for links in the intake. taking into consideration I put my Turbo OBDII app on, everything seems good except that the TPS stays constant all but 30%. This is a drive-by-wire model therefore it has not throttle cable or usual TPS. I agree to the TPS is integrated later the throttle controller/motor. Mechanic s Assistant: whatever else you want the mechanic to know in the past I connect you? No, I guess that is it.
I started the car taking place this morning, it starts up and runs at 1750 and within a minute or hence climbs on top of 2500.. It is giving out mild though, just mannerism forward-looking than it should be. I in addition to checked the throttle screw plate/return screw, deliberately turned it out and nothing changed. put it incite to exactly where it was. No vacuum leak sounds and all links verified. I setting fine nearly them as I've been in there a bunch of times..
This could be a large vacuum leak ,with the MAF aligned it is unaccompanied measuring the let breathe that is getting gone the MAF, appropriately if the intake manifold is sucking in let breathe the expose to fuel ratio will be no question out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. next carb cleaner spray spray in the place of the hissing bearing in mind the engine organization and later you listen the engine stall or rev progressive there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.