I have a 2004 ES330 like a hestitation problem. It is fine from a full end but like I go in relation to turns on onto highway ramps, bearing in mind I upset 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 considering the similar engine and it jumps off the start and has no hesitation. Mechanic s Assistant: Will the headlights direction on? Is the battery abundantly 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 so far? I ve cleaned the MAF sensor. Checked for friends in the intake. following I put my Turbo OBDII app on, anything seems fine except that the TPS stays constant concerning 30%. This is a drive-by-wire model in view of that it has not throttle cable or normal TPS. I believe the TPS is integrated like the throttle controller/motor. Mechanic s Assistant: everything else you desire the mechanic to know previously I connect you? No, I guess that is it.
Its as well as worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a in poor health pump will all repercussion in insufficient fuel being delivered to the engine. Might plus be worth cleaning out the idle swiftness manage motor / valve as these get clogged taking place taking into consideration carbon and some brake cleaner washed through helps free things off.
This could be a large vacuum leak ,with the MAF aligned it is by yourself measuring the ventilate that is getting taking into consideration the MAF, hence if the intake manifold is sucking in ventilate the expose to fuel ratio will be certainly 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 spray can vaporizer in the area of the hissing in the same way as the engine organization and taking into consideration you listen the engine stall or rev far ahead there is the leak ,could be a bad vacuum hose bad gasket on the manifold.