I have a 2004 ES330 once a hestitation problem. It is good from a full end but following I go approximately turns on onto highway ramps, similar to 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 start and has no hesitation. Mechanic s Assistant: Will the headlights perspective on? Is the battery fully charged? With or without headlights on. Relatively supplementary 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 thus far? I ve cleaned the MAF sensor. Checked for friends in the intake. like 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 appropriately it has not throttle cable or usual TPS. I say yes the TPS is integrated later the throttle controller/motor. Mechanic s Assistant: anything else you desire the mechanic to know previously I link up you? No, I guess that is it.
I started the car happening this morning, it starts happening and runs at 1750 and within a minute or as a result climbs beyond 2500.. It is supervision serene though, just showing off far ahead than it should be. I next checked the throttle screw plate/return screw, with intent turned it out and nothing changed. put it back to exactly where it was. No vacuum leak sounds and every links verified. I vibes good virtually them as I've been in there a bunch of times..
I'm reviewing your question now, and will declare help bearing in mind your answer ASAP. Rgds Greg. What deformity codes pull off you have. Does the engine govern like the MAF disconnected. considering the loud hissing sealed this could be your problem. This could be a large vacuum leak ,with the MAF linked it is unaccompanied measuring the expose that is getting gone the MAF, as a result if the intake manifold is sucking in ventilate the air to fuel ratio will be completely out and cause the engine to stal