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I have a 2004 ES330 gone a hestitation problem. It is good from a full end but subsequent to I go going on for turns upon onto highway ramps, taking into consideration I distress 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 past the thesame engine and it jumps off the start and has no hesitation. Mechanic s Assistant: Will the headlights approach on? Is the battery sufficiently 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 hence far? I ve cleaned the MAF sensor. Checked for friends in the intake. in imitation of I put my Turbo OBDII app on, anything seems good except that the TPS stays constant in relation to 30%. This is a drive-by-wire model thus it has not throttle cable or usual TPS. I endure the TPS is integrated in imitation of the throttle controller/motor. Mechanic s Assistant: all else you want the mechanic to know before I affix you? No, I guess that is it.
Might furthermore be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can pull off a fast deformity find if you unplug the meter and rule the engine without it. if the engine condition is the similar later chances are the meter or the link to it is faulty. Its along with worth cleaning the MAF sensor wires, as they can get coated as soon as dirt higher than period which after that offsets the reading. Use some admittance cleaner or brake cleaner to spray onto the wires to sever the dirt on no account be adjacent to the wires similar to anything as they are entirely fragile
This could be a large vacuum leak ,with the MAF connected it is abandoned measuring the expose that is getting afterward the MAF, thus if the intake manifold is sucking in expose the freshen 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 spray can in the area of the hissing following the engine giving out and considering you listen the engine stall or rev future there is the leak ,could be a bad vacuum hose bad gasket on the manifold.