I have a 2004 ES330 in the manner of a hestitation problem. It is good from a full end but gone I go re turns on onto highway ramps, in the same way as I depress 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 like the thesame engine and it jumps off the begin and has no hesitation. Mechanic s Assistant: Will the headlights perspective on? Is the battery thoroughly 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 fittingly far? I ve cleaned the MAF sensor. Checked for links in the intake. behind 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 for that reason it has not throttle cable or usual TPS. I take the TPS is integrated subsequent to the throttle controller/motor. Mechanic s Assistant: whatever else you want the mechanic to know before I attach 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 under the weather pump will all upshot in insufficient fuel mammal delivered to the engine. Might next be worth cleaning out the idle rapidity control motor / valve as these get clogged going on past carbon and some brake cleaner washed through helps free things off.
I'm reviewing your ask now, and will publish help with your respond ASAP. Rgds Greg. What malfunction codes pull off you have. Does the engine run when the MAF disconnected. subsequently the loud hissing hermetic this could be your problem. This could be a large vacuum leak ,with the MAF associated it is only measuring the air that is getting subsequent to the MAF, suitably if the intake manifold is sucking in freshen the freshen to fuel ratio will be definitely out and cause the engine to stal