I have a 2004 ES330 next a hestitation problem. It is good from a full end but in the manner of I go something like turns on onto highway ramps, afterward I upset 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 behind the thesame engine and it jumps off the start and has no hesitation. Mechanic s Assistant: Will the headlights outlook on? Is the battery adequately 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 so far? I ve cleaned the MAF sensor. Checked for links in the intake. subsequent to I put my Turbo OBDII app on, anything seems fine except that the TPS stays constant roughly speaking 30%. This is a drive-by-wire model in view of that it has not throttle cable or normal TPS. I endure the TPS is integrated next the throttle controller/motor. Mechanic s Assistant: everything else you desire the mechanic to know before I link up you? No, I guess that is it.
Its plus 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 every result in insufficient fuel living thing delivered to the engine. Might plus be worth cleaning out the idle speed control motor / valve as these acquire clogged occurring behind carbon and some brake cleaner washed through helps pardon things off.
This could be a large vacuum leak ,with the MAF linked it is only measuring the ventilate that is getting subsequently the MAF, thus if the intake manifold is sucking in ventilate the ventilate to fuel ratio will be definitely out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. behind carb cleaner spray vaporizer in the place of the hissing behind the engine dealing out and in imitation of you hear the engine stall or rev cutting edge there is the leak ,could be a bad vacuum hose bad gasket on the manifold.