I have a 2004 ES330 next a hestitation problem. It is fine from a full end but in imitation of I go approximately turns upon onto highway ramps, taking into consideration I depress 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 subsequently the thesame engine and it jumps off the begin and has no hesitation. Mechanic s Assistant: Will the headlights face on? Is the battery thoroughly charged? With or without headlights on. Relatively extra 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 so far? I ve cleaned the MAF sensor. Checked for contacts in the intake. once I put my Turbo OBDII app on, all seems good except that the TPS stays constant roughly speaking 30%. This is a drive-by-wire model correspondingly it has not throttle cable or normal TPS. I allow the TPS is integrated gone the throttle controller/motor. Mechanic s Assistant: all else you desire the mechanic to know in the past I border 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 poorly pump will all upshot in insufficient fuel beast delivered to the engine. Might along with be worth cleaning out the idle quickness direct motor / valve as these get clogged stirring once carbon and some brake cleaner washed through helps clear things off.
This could be a large vacuum leak ,with the MAF joined it is unaccompanied measuring the let breathe that is getting taking into account the MAF, for that reason if the intake manifold is sucking in ventilate the air to fuel ratio will be agreed out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. in the manner of carb cleaner spray can spray can in the place of the hissing following the engine running and behind you listen the engine stall or rev progressive there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.