I have a 2004 ES330 later a hestitation problem. It is fine from a full stop but taking into account I go as regards turns on onto highway ramps, later I afflict the accellarator (sp?) it hesitates for 2 seconds since reving up. I ve taken it to a mechanic and he says it is normal. I have an 2003 Avalon subsequently the similar engine and it jumps off the begin and has no hesitation. Mechanic s Assistant: Will the headlights tilt 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 as a result far? I ve cleaned the MAF sensor. Checked for contacts in the intake. taking into account I put my Turbo OBDII app on, all seems fine except that the TPS stays constant approaching 30%. This is a drive-by-wire model for that reason it has not throttle cable or normal TPS. I say yes the TPS is integrated similar to the throttle controller/motor. Mechanic s Assistant: whatever else you want the mechanic to know previously I affix you? No, I guess that is it.
I did re-check them tho. The master tech did extensive tests on the ventilate flow meter and said it was good. later I unplug it and govern the motor, the car runs harsh and at 850ish. I can lonely guess that my extra rebuilt ecu has an issue, or the tps needs to be re-adjusted, or somehow my maf has died in the midst of all this. I don't think the tps has that much rule in the swing of rpm though? I think it forlorn adjusts it as regards 1k..
This could be a large vacuum leak ,with the MAF similar it is lonesome measuring the ventilate that is getting once the MAF, for that reason if the intake manifold is sucking in let breathe the freshen to fuel ratio will be unconditionally out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. when carb cleaner vaporizer spray can in the place of the hissing subsequent to the engine doling out and later than you hear the engine stall or rev vanguard there is the leak ,could be a bad vacuum hose bad gasket on the manifold.