I have a 2004 ES330 taking into consideration a hestitation problem. It is fine from a full end but similar to I go just about turns on onto highway ramps, like I sadden the accellarator (sp?) it hesitates for 2 seconds before reving up. I ve taken it to a mechanic and he says it is normal. I have an 2003 Avalon gone the thesame engine and it jumps off the begin and has no hesitation. Mechanic s Assistant: Will the headlights twist 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 consequently far? I ve cleaned the MAF sensor. Checked for friends in the intake. later I put my Turbo OBDII app on, all seems fine except that the TPS stays constant not far off from 30%. This is a drive-by-wire model in view of that it has not throttle cable or usual TPS. I tolerate the TPS is integrated considering the throttle controller/motor. Mechanic s Assistant: anything else you desire the mechanic to know before I border you? No, I guess that is it.
Might with be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can do a fast idiosyncrasy locate if you unplug the meter and control the engine without it. if the engine condition is the same then chances are the meter or the link to it is faulty. Its also worth cleaning the MAF sensor wires, as they can get coated in imitation of dirt more than mature which next offsets the reading. Use some read cleaner or brake cleaner to spray can onto the wires to separate the dirt on no account adjoin the wires past anything as they are unconditionally fragile
I'm reviewing your ask now, and will make known urge on bearing in mind your answer ASAP. Rgds Greg. What malfunction codes get you have. Does the engine rule afterward the MAF disconnected. in imitation of the loud hissing sealed this could be your problem. This could be a large vacuum leak ,with the MAF associated it is solitary measuring the ventilate that is getting in the manner of the MAF, so if the intake manifold is sucking in let breathe the air to fuel ratio will be definitely out and cause the engine to stal