I have a 2004 ES330 once a hestitation problem. It is good from a full stop but bearing in mind I go around turns on onto highway ramps, next I upset 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 start and has no hesitation. Mechanic s Assistant: Will the headlights slope on? Is the battery sufficiently charged? With or without headlights on. Relatively further 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 connections in the intake. in imitation of I put my Turbo OBDII app on, everything seems fine except that the TPS stays constant roughly speaking 30%. This is a drive-by-wire model thus it has not throttle cable or usual TPS. I take the TPS is integrated taking into consideration the throttle controller/motor. Mechanic s Assistant: everything else you desire the mechanic to know past I attach you? No, I guess that is it.
I did re-check them tho. The master tech did extensive tests on the let breathe flow meter and said it was good. next I unplug it and direct the motor, the car runs gruff and at 850ish. I can unaided guess that my additional rebuilt ecu has an issue, or the tps needs to be re-adjusted, or someway my maf has died in the midst of every this. I don't think the tps has that much control in the interchange of rpm though? I think it deserted adjusts it roughly 1k..
I'm reviewing your question now, and will make known support later your respond ASAP. Rgds Greg. What malformation codes pull off you have. Does the engine manage in imitation of the MAF disconnected. afterward the noisy hissing sound this could be your problem. This could be a large vacuum leak ,with the MAF associated it is solitary measuring the let breathe that is getting as soon as the MAF, correspondingly if the intake manifold is sucking in ventilate the freshen to fuel ratio will be utterly out and cause the engine to stal