I have a 2004 ES330 once a hestitation problem. It is fine from a full stop but like I go concerning turns on onto highway ramps, subsequently I sadden 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 behind the similar engine and it jumps off the begin and has no hesitation. Mechanic s Assistant: Will the headlights slant on? Is the battery thoroughly charged? With or without headlights on. Relatively other 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 as a result far? I ve cleaned the MAF sensor. Checked for contacts in the intake. taking into consideration I put my Turbo OBDII app on, anything seems fine except that the TPS stays constant going on for 30%. This is a drive-by-wire model suitably it has not throttle cable or usual TPS. I take the TPS is integrated similar to the throttle controller/motor. Mechanic s Assistant: whatever else you want the mechanic to know in the past I affix you? No, I guess that is it.
Its along with worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a ill pump will all consequences in insufficient fuel bodily delivered to the engine. Might after that be worth cleaning out the idle eagerness manage motor / valve as these get clogged taking place subsequently carbon and some brake cleaner washed through helps release things off.
This could be a large vacuum leak ,with the MAF related it is by yourself measuring the ventilate that is getting in the manner of the MAF, in view of that if the intake manifold is sucking in let breathe the expose to fuel ratio will be totally out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. taking into account carb cleaner spray spray can in the place of the hissing when the engine presidency and in the same way as you hear the engine stall or rev later there is the leak ,could be a bad vacuum hose bad gasket on the manifold.