I have a 2004 ES330 following a hestitation problem. It is fine from a full end but once I go approaching turns upon onto highway ramps, later than I depress 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 when the same engine and it jumps off the begin and has no hesitation. Mechanic s Assistant: Will the headlights outlook 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 for that reason far? I ve cleaned the MAF sensor. Checked for associates in the intake. in the manner of I put my Turbo OBDII app on, anything seems good except that the TPS stays constant a propos 30%. This is a drive-by-wire model thus it has not throttle cable or normal TPS. I acknowledge the TPS is integrated behind the throttle controller/motor. Mechanic s Assistant: whatever else you want the mechanic to know since I be close to you? No, I guess that is it.
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I started the car going on this morning, it starts going on and runs at 1750 and within a minute or appropriately climbs beyond 2500.. It is processing smooth though, just pretension sophisticated than it should be. I also checked the throttle screw plate/return screw, carefully turned it out and nothing changed. put it encourage to exactly where it was. No vacuum leak sounds and every contacts verified. I tone fine not quite them as I've been in there a bunch of times..
This could be a large vacuum leak ,with the MAF aligned it is isolated measuring the expose that is getting in the manner of the MAF, consequently if the intake manifold is sucking in ventilate the let breathe to fuel ratio will be extremely out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. taking into consideration carb cleaner vaporizer vaporizer in the area of the hissing later the engine handing out and subsequently you listen the engine stall or rev cutting edge there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.
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