I have a 2004 ES330 past a hestitation problem. It is good from a full stop but bearing in mind I go just about turns upon onto highway ramps, considering I afflict the accellarator (sp?) it hesitates for 2 seconds previously reving up. I ve taken it to a mechanic and he says it is normal. I have an 2003 Avalon in the manner of the same engine and it jumps off the begin and has no hesitation. Mechanic s Assistant: Will the headlights tilt 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 as a result far? I ve cleaned the MAF sensor. Checked for connections in the intake. bearing in mind I put my Turbo OBDII app on, all seems fine except that the TPS stays constant approximately 30%. This is a drive-by-wire model hence it has not throttle cable or normal TPS. I take the TPS is integrated past the throttle controller/motor. Mechanic s Assistant: everything else you desire the mechanic to know previously I border you? No, I guess that is it.
Might furthermore be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can complete a quick anomaly find if you unplug the meter and manage the engine without it. if the engine condition is the same then chances are the meter or the link to it is faulty. Its as well as worth cleaning the MAF sensor wires, as they can acquire coated gone dirt exceeding grow old which then offsets the reading. Use some read cleaner or brake cleaner to spray can onto the wires to surgically remove the dirt upon no account be adjacent to the wires in the same way as everything as they are enormously fragile
I'm reviewing your question now, and will reveal encourage as soon as your respond ASAP. Rgds Greg. What defect codes get you have. Does the engine run as soon as the MAF disconnected. as soon as the noisy hissing unassailable this could be your problem. This could be a large vacuum leak ,with the MAF similar it is forlorn measuring the ventilate that is getting subsequent to the MAF, fittingly if the intake manifold is sucking in freshen the freshen to fuel ratio will be categorically out and cause the engine to stal