I have a 2004 ES330 later than a hestitation problem. It is fine from a full end but taking into account I go on the subject of turns on onto highway ramps, later than 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 in the manner of the same engine and it jumps off the start and has no hesitation. Mechanic s Assistant: Will the headlights slope on? Is the battery adequately charged? With or without headlights on. Relatively additional 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 in view of that far? I ve cleaned the MAF sensor. Checked for associates in the intake. as soon as I put my Turbo OBDII app on, anything seems fine except that the TPS stays constant approximately 30%. This is a drive-by-wire model thus it has not throttle cable or usual TPS. I tolerate the TPS is integrated like the throttle controller/motor. Mechanic s Assistant: whatever else you desire the mechanic to know in the past I connect you? No, I guess that is it.
Might as a consequence be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can realize a quick oddity locate if you unplug the meter and govern the engine without it. if the engine condition is the same next chances are the meter or the connection to it is faulty. Its also worth cleaning the MAF sensor wires, as they can acquire coated when dirt over times which then offsets the reading. Use some log on cleaner or brake cleaner to vaporizer onto the wires to separate the dirt upon no account touch the wires following whatever as they are completely fragile
I'm reviewing your question now, and will name back taking into consideration your answer ASAP. Rgds Greg. What oddity codes attain you have. Does the engine govern later than the MAF disconnected. next the loud hissing hermetic this could be your problem. This could be a large vacuum leak ,with the MAF aligned it is lonesome measuring the expose that is getting subsequently the MAF, in view of that if the intake manifold is sucking in ventilate the freshen to fuel ratio will be entirely out and cause the engine to stal