I have a 2004 ES330 taking into consideration a hestitation problem. It is good from a full stop but subsequently I go around turns upon onto highway ramps, behind 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 later the thesame engine and it jumps off the begin and has no hesitation. Mechanic s Assistant: Will the headlights turn on? Is the battery adequately 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 for that reason far? I ve cleaned the MAF sensor. Checked for contacts in the intake. following I put my Turbo OBDII app on, whatever seems good except that the TPS stays constant more or less 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 following the throttle controller/motor. Mechanic s Assistant: anything else you want the mechanic to know since I attach you? No, I guess that is it.
Might also be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can realize a fast idiosyncrasy locate if you unplug the meter and rule the engine without it. if the engine condition is the similar later chances are the meter or the connection to it is faulty. Its moreover worth cleaning the MAF sensor wires, as they can get coated like dirt exceeding epoch which later offsets the reading. Use some approach cleaner or brake cleaner to vaporizer onto the wires to sever the dirt on no account be next to the wires in the same way as everything as they are certainly fragile
I'm reviewing your ask now, and will name back up subsequent to your respond ASAP. Rgds Greg. What irregularity codes reach you have. Does the engine govern later than the MAF disconnected. following the noisy hissing unassailable this could be your problem. This could be a large vacuum leak ,with the MAF connected it is unaccompanied measuring the expose that is getting in the manner of the MAF, for that reason if the intake manifold is sucking in expose the expose to fuel ratio will be enormously out and cause the engine to stal