I have a 2004 ES330 later than a hestitation problem. It is fine from a full stop but in the manner of I go approaching 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 with the same engine and it jumps off the begin and has no hesitation. Mechanic s Assistant: Will the headlights tilt on? Is the battery sufficiently 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 fittingly far? I ve cleaned the MAF sensor. Checked for contacts in the intake. in imitation of I put my Turbo OBDII app on, whatever seems good except that the TPS stays constant a propos 30%. This is a drive-by-wire model suitably it has not throttle cable or normal TPS. I acknowledge the TPS is integrated in imitation of the throttle controller/motor. Mechanic s Assistant: whatever else you want the mechanic to know back I affix you? No, I guess that is it.
Thanks for your response. I just checked what you mentioned, that I hadn't already checked, except fuel pressure.Let me tell you a little more approximately the burden history. It currently has a master tech endorsed idle freshen govern valve and tps installed. without moving anything, the last (used) ecu and my original, would manage in the car without this symptom.
I'm reviewing your question now, and will make known help later than your respond ASAP. Rgds Greg. What fault codes accomplish you have. Does the engine direct afterward the MAF disconnected. as soon as the loud hissing hermetically sealed this could be your problem. This could be a large vacuum leak ,with the MAF related it is and no-one else measuring the let breathe that is getting later the MAF, fittingly if the intake manifold is sucking in freshen the let breathe to fuel ratio will be categorically out and cause the engine to stal