I have a 2004 ES330 bearing in mind a hestitation problem. It is fine from a full end but later I go roughly turns upon onto highway ramps, later than I distress the accellarator (sp?) it hesitates for 2 seconds in the past reving up. I ve taken it to a mechanic and he says it is normal. I have an 2003 Avalon once the thesame engine and it jumps off the begin and has no hesitation. Mechanic s Assistant: Will the headlights turn on? Is the battery adequately 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 correspondingly far? I ve cleaned the MAF sensor. Checked for associates in the intake. considering I put my Turbo OBDII app on, everything seems good except that the TPS stays constant not far off from 30%. This is a drive-by-wire model consequently it has not throttle cable or normal TPS. I consent the TPS is integrated taking into account the throttle controller/motor. Mechanic s Assistant: anything else you desire the mechanic to know before I attach you? No, I guess that is it.
Its then worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a sick pump will all result in insufficient fuel being delivered to the engine. Might plus be worth cleaning out the idle zeal direct motor / valve as these get clogged in the works bearing in mind carbon and some brake cleaner washed through helps forgive things off.
This could be a large vacuum leak ,with the MAF linked it is abandoned measuring the ventilate that is getting in the manner of the MAF, for that reason if the intake manifold is sucking in ventilate 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. following carb cleaner vaporizer spray can in the place of the hissing in the manner of the engine management and once you hear the engine stall or rev well along there is the leak ,could be a bad vacuum hose bad gasket on the manifold.