I have a 2004 ES330 gone a hestitation problem. It is good from a full end but in the same way as I go something like turns on onto highway ramps, like I upset 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 next the similar engine and it jumps off the start and has no hesitation. Mechanic s Assistant: Will the headlights point of view on? Is the battery thoroughly charged? With or without headlights on. Relatively supplementary 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 consequently far? I ve cleaned the MAF sensor. Checked for contacts in the intake. past I put my Turbo OBDII app on, anything seems fine except that the TPS stays constant approximately 30%. This is a drive-by-wire model for that reason it has not throttle cable or usual TPS. I understand the TPS is integrated taking into account the throttle controller/motor. Mechanic s Assistant: whatever else you want the mechanic to know previously I attach you? No, I guess that is it.
Its also worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a not at your best pump will every repercussion in insufficient fuel visceral delivered to the engine. Might then be worth cleaning out the idle zeal run motor / valve as these get clogged taking place bearing in mind carbon and some brake cleaner washed through helps release things off.
This could be a large vacuum leak ,with the MAF aligned it is on your own measuring the freshen that is getting subsequent to the MAF, in view of that 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. gone carb cleaner spray can spray in the area of the hissing next the engine direction and later than you hear the engine stall or rev well ahead there is the leak ,could be a bad vacuum hose bad gasket on the manifold.