I have a 2004 ES330 later than a hestitation problem. It is fine from a full end but subsequently I go approximately turns upon onto highway ramps, considering I sadden the accellarator (sp?) it hesitates for 2 seconds previously reving up. I ve taken it to a mechanic and he says it is normal. I have an 2003 Avalon bearing in mind the similar engine and it jumps off the start and has no hesitation. Mechanic s Assistant: Will the headlights turn on? Is the battery sufficiently 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 thus far? I ve cleaned the MAF sensor. Checked for contacts in the intake. later I put my Turbo OBDII app on, everything seems fine except that the TPS stays constant vis--vis 30%. This is a drive-by-wire model in view of that it has not throttle cable or usual TPS. I understand the TPS is integrated once the throttle controller/motor. Mechanic s Assistant: whatever else you desire the mechanic to know back I be next to you? No, I guess that is it.
Its as a consequence 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 consequences in insufficient fuel brute delivered to the engine. Might in addition to be worth cleaning out the idle keenness control motor / valve as these get clogged stirring bearing in mind carbon and some brake cleaner washed through helps free things off.
I'm reviewing your ask now, and will post encourage with your answer ASAP. Rgds Greg. What aberration codes do you have. Does the engine control taking into consideration the MAF disconnected. later than the loud hissing hermetically sealed this could be your problem. This could be a large vacuum leak ,with the MAF combined it is unaided measuring the freshen that is getting afterward the MAF, in view of that if the intake manifold is sucking in ventilate the air to fuel ratio will be unquestionably out and cause the engine to stal