I have a 2004 ES330 with a hestitation problem. It is good from a full end but once I go not far off from turns upon onto highway ramps, in imitation of 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 with the thesame engine and it jumps off the begin and has no hesitation. Mechanic s Assistant: Will the headlights twist on? Is the battery sufficiently 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 so far? I ve cleaned the MAF sensor. Checked for connections in the intake. considering I put my Turbo OBDII app on, whatever seems good except that the TPS stays constant on the subject of 30%. This is a drive-by-wire model suitably it has not throttle cable or usual TPS. I understand the TPS is integrated gone the throttle controller/motor. Mechanic s Assistant: anything else you desire the mechanic to know previously I affix you? No, I guess that is it.
Its moreover 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 all repercussion in insufficient fuel monster delivered to the engine. Might with be worth cleaning out the idle quickness run motor / valve as these get clogged occurring as soon as carbon and some brake cleaner washed through helps forgive things off.
This could be a large vacuum leak ,with the MAF linked it is abandoned measuring the freshen that is getting like the MAF, correspondingly if the intake manifold is sucking in let breathe the air 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. subsequently carb cleaner spray spray in the area of the hissing subsequent to the engine processing and once you hear the engine stall or rev complex there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.