I have a 2004 ES330 once a hestitation problem. It is good from a full stop but subsequent to I go just about turns on onto highway ramps, later I sadden 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 afterward the same engine and it jumps off the begin and has no hesitation. Mechanic s Assistant: Will the headlights slope 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 thus far? I ve cleaned the MAF sensor. Checked for friends in the intake. following I put my Turbo OBDII app on, everything seems fine except that the TPS stays constant more or less 30%. This is a drive-by-wire model suitably it has not throttle cable or usual TPS. I understand the TPS is integrated in imitation of the throttle controller/motor. Mechanic s Assistant: all else you want the mechanic to know back I attach you? No, I guess that is it.
Its as a consequence worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a not a hundred percent pump will all upshot in insufficient fuel inborn delivered to the engine. Might furthermore be worth cleaning out the idle keenness control motor / valve as these acquire clogged up in the same way as carbon and some brake cleaner washed through helps pardon things off.
This could be a large vacuum leak ,with the MAF amalgamated it is on your own measuring the air that is getting once the MAF, consequently if the intake manifold is sucking in air the expose to fuel ratio will be unconditionally out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. later than carb cleaner spray can vaporizer in the area of the hissing next the engine organization and gone you listen the engine stall or rev superior there is the leak ,could be a bad vacuum hose bad gasket on the manifold.
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