I have a 2004 ES330 once a hestitation problem. It is fine from a full end but later than I go approximately turns on onto highway ramps, behind I hurt 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 later than the similar engine and it jumps off the start and has no hesitation. Mechanic s Assistant: Will the headlights direction on? Is the battery thoroughly charged? With or without headlights on. Relatively extra 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 correspondingly far? I ve cleaned the MAF sensor. Checked for friends in the intake. past I put my Turbo OBDII app on, whatever seems good except that the TPS stays constant almost 30%. This is a drive-by-wire model hence it has not throttle cable or usual TPS. I admit the TPS is integrated subsequent to the throttle controller/motor. Mechanic s Assistant: whatever else you want the mechanic to know previously I connect you? No, I guess that is it.
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Might in addition to be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can get a fast irregularity locate if you unplug the meter and manage the engine without it. if the engine condition is the thesame after that chances are the meter or the relationship to it is faulty. Its also worth cleaning the MAF sensor wires, as they can get coated in the manner of dirt on top of times which subsequently offsets the reading. Use some door cleaner or brake cleaner to spray can onto the wires to surgically remove the dirt upon no account adjoin the wires with all as they are totally fragile
This could be a large vacuum leak ,with the MAF associated it is unaided measuring the expose that is getting taking into consideration the MAF, so if the intake manifold is sucking in ventilate the let breathe to fuel ratio will be no question out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. considering carb cleaner spray can spray in the area of the hissing once the engine processing and next you hear the engine stall or rev well ahead there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.
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