I have a 2004 ES330 in the same way as a hestitation problem. It is good from a full stop but with I go in the region of turns on onto highway ramps, when I depress the accellarator (sp?) it hesitates for 2 seconds previously reving up. I ve taken it to a mechanic and he says it is normal. I have an 2003 Avalon past the same engine and it jumps off the start and has no hesitation. Mechanic s Assistant: Will the headlights incline on? Is the battery fully charged? With or without headlights on. Relatively supplementary 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 links in the intake. subsequently I put my Turbo OBDII app on, whatever seems good except that the TPS stays constant on 30%. This is a drive-by-wire model fittingly it has not throttle cable or normal TPS. I acknowledge the TPS is integrated when the throttle controller/motor. Mechanic s Assistant: all else you want the mechanic to know back I affix 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 little more very nearly the problem history. It currently has a master tech qualified idle expose manage valve and tps installed. without distressing anything, the last (used) ecu and my original, would govern in the car without this symptom.
This could be a large vacuum leak ,with the MAF connected it is lonesome measuring the air that is getting like the MAF, in view of that if the intake manifold is sucking in air the freshen to fuel ratio will be unquestionably out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. afterward carb cleaner spray can spray can in the area of the hissing like the engine dealing out and subsequently you listen the engine stall or rev progressive there is the leak ,could be a bad vacuum hose bad gasket on the manifold.
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