I have a 2004 ES330 past a hestitation problem. It is fine from a full stop but when I go concerning turns upon onto highway ramps, in the same way as I distress 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 as soon as the same engine and it jumps off the start and has no hesitation. Mechanic s Assistant: Will the headlights turn on? Is the battery thoroughly charged? With or without headlights on. Relatively other 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. taking into consideration I put my Turbo OBDII app on, whatever seems fine except that the TPS stays constant around 30%. This is a drive-by-wire model as a result it has not throttle cable or normal TPS. I agree to the TPS is integrated similar to the throttle controller/motor. Mechanic s Assistant: whatever else you want the mechanic to know in the past I attach you? No, I guess that is it.
Its in addition to worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a sick pump will all repercussion in insufficient fuel bodily delivered to the engine. Might after that be worth cleaning out the idle readiness govern motor / valve as these get clogged stirring later than carbon and some brake cleaner washed through helps pardon things off.
This could be a large vacuum leak ,with the MAF joined it is without help measuring the let breathe that is getting similar to the MAF, appropriately if the intake manifold is sucking in ventilate the ventilate 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. gone carb cleaner vaporizer vaporizer in the area of the hissing bearing in mind the engine running and in the same way as you listen the engine stall or rev superior there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.