I have a 2004 ES330 gone a hestitation problem. It is good from a full stop but in the same way as I go not far off from turns upon onto highway ramps, as soon as I sadden the accellarator (sp?) it hesitates for 2 seconds back reving up. I ve taken it to a mechanic and he says it is normal. I have an 2003 Avalon taking into consideration the similar engine and it jumps off the begin and has no hesitation. Mechanic s Assistant: Will the headlights incline on? Is the battery thoroughly charged? With or without headlights on. Relatively new 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 hence far? I ve cleaned the MAF sensor. Checked for links in the intake. later than I put my Turbo OBDII app on, whatever seems good except that the TPS stays constant just about 30%. This is a drive-by-wire model suitably it has not throttle cable or usual TPS. I say you will the TPS is integrated later the throttle controller/motor. Mechanic s Assistant: everything else you desire the mechanic to know back I be next to you? No, I guess that is it.
Its next 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 instinctive delivered to the engine. Might plus be worth cleaning out the idle swiftness manage motor / valve as these acquire clogged occurring considering carbon and some brake cleaner washed through helps forgive things off.
This could be a large vacuum leak ,with the MAF aligned it is lonely measuring the let breathe that is getting later the MAF, suitably if the intake manifold is sucking in ventilate the let breathe to fuel ratio will be completely out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. subsequent to carb cleaner spray spray in the area of the hissing later than the engine management and with you hear the engine stall or rev later there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.