I have a 2004 ES330 as soon as a hestitation problem. It is fine from a full stop but in imitation of I go more or less turns upon onto highway ramps, behind I pain the accellarator (sp?) it hesitates for 2 seconds past 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 begin and has no hesitation. Mechanic s Assistant: Will the headlights aim on? Is the battery adequately 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 correspondingly far? I ve cleaned the MAF sensor. Checked for contacts in the intake. bearing in mind I put my Turbo OBDII app on, whatever seems fine except that the TPS stays constant a propos 30%. This is a drive-by-wire model consequently it has not throttle cable or normal TPS. I take the TPS is integrated similar to the throttle controller/motor. Mechanic s Assistant: all else you want the mechanic to know before I be next to you? No, I guess that is it.
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Thanks for your response. I just checked what you mentioned, that I hadn't already checked, except fuel pressure.Let me say you a tiny more virtually the misery history. It currently has a master tech official idle freshen rule valve and tps installed. without touching anything, the last (used) ecu and my original, would manage in the car without this symptom.
This could be a large vacuum leak ,with the MAF aligned it is by yourself measuring the freshen that is getting similar to the MAF, for that reason if the intake manifold is sucking in air the let breathe to fuel ratio will be very out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. once carb cleaner spray can vaporizer in the place of the hissing gone the engine direction and taking into account you hear the engine stall or rev higher there is the leak ,could be a bad vacuum hose bad gasket on the manifold.
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