I have a 2004 ES330 in imitation of a hestitation problem. It is fine from a full stop but afterward I go nearly turns on onto highway ramps, subsequently I hurt 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 later than the thesame engine and it jumps off the start and has no hesitation. Mechanic s Assistant: Will the headlights point of view on? Is the battery abundantly 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 hence far? I ve cleaned the MAF sensor. Checked for associates in the intake. behind I put my Turbo OBDII app on, anything seems good except that the TPS stays constant concerning 30%. This is a drive-by-wire model suitably it has not throttle cable or usual TPS. I believe the TPS is integrated afterward the throttle controller/motor. Mechanic s Assistant: anything else you want the mechanic to know since I link up you? No, I guess that is it.
I did re-check them tho. The master tech did extensive tests upon the expose flow meter and said it was good. in the manner of I unplug it and govern the motor, the car runs harsh and at 850ish. I can unaccompanied guess that my other rebuilt ecu has an issue, or the tps needs to be re-adjusted, or someway my maf has died in the midst of all this. I don't think the tps has that much control in the rotate of rpm though? I think it unaccompanied adjusts it approximately 1k..
This could be a large vacuum leak ,with the MAF associated it is solitary measuring the expose that is getting following the MAF, consequently if the intake manifold is sucking in air 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. in the manner of carb cleaner vaporizer vaporizer in the place of the hissing subsequent to the engine organization and like you hear the engine stall or rev well ahead there is the leak ,could be a bad vacuum hose bad gasket on the manifold.