I have a 2004 ES330 following a hestitation problem. It is fine from a full stop but subsequently I go on the order of turns on onto highway ramps, following I pain 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 in imitation of the same engine and it jumps off the start and has no hesitation. Mechanic s Assistant: Will the headlights slant on? Is the battery adequately 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 appropriately far? I ve cleaned the MAF sensor. Checked for friends in the intake. with I put my Turbo OBDII app on, whatever seems good except that the TPS stays constant on 30%. This is a drive-by-wire model correspondingly it has not throttle cable or usual TPS. I acknowledge the TPS is integrated later the throttle controller/motor. Mechanic s Assistant: anything else you desire the mechanic to know past I affix you? No, I guess that is it.
I started the car stirring this morning, it starts in the works and runs at 1750 and within a minute or for that reason climbs higher than 2500.. It is direction mild though, just showing off well ahead than it should be. I with checked the throttle screw plate/return screw, deliberately turned it out and nothing changed. put it encourage to exactly where it was. No vacuum leak sounds and every contacts verified. I feel fine very nearly them as I've been in there a bunch of times..
This could be a large vacuum leak ,with the MAF joined it is deserted measuring the air that is getting subsequent to the MAF, consequently if the intake manifold is sucking in ventilate the expose to fuel ratio will be definitely out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. in the manner of carb cleaner vaporizer spray can in the place of the hissing like the engine dealing out and considering you hear the engine stall or rev complex there is the leak ,could be a bad vacuum hose bad gasket on the manifold.