I have a 2004 ES330 once a hestitation problem. It is good from a full stop but afterward I go regarding turns upon onto highway ramps, like I sadden the accellarator (sp?) it hesitates for 2 seconds since reving up. I ve taken it to a mechanic and he says it is normal. I have an 2003 Avalon when the same engine and it jumps off the begin and has no hesitation. Mechanic s Assistant: Will the headlights viewpoint 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 suitably far? I ve cleaned the MAF sensor. Checked for friends in the intake. subsequent to I put my Turbo OBDII app on, everything seems fine except that the TPS stays constant almost 30%. This is a drive-by-wire model correspondingly it has not throttle cable or usual TPS. I agree to the TPS is integrated considering the throttle controller/motor. Mechanic s Assistant: anything else you want the mechanic to know in the past I link up 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 under the weather pump will every outcome in insufficient fuel beast delivered to the engine. Might then be worth cleaning out the idle speed govern motor / valve as these get clogged up similar to carbon and some brake cleaner washed through helps release things off.
This could be a large vacuum leak ,with the MAF similar it is isolated measuring the let breathe that is getting like the MAF, fittingly if the intake manifold is sucking in ventilate the let breathe 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. past carb cleaner spray can spray can in the area of the hissing like the engine government and like you hear the engine stall or rev well along there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.