I have a 2004 ES330 as soon as a hestitation problem. It is good from a full stop but gone I go something like turns on onto highway ramps, later I afflict the accellarator (sp?) it hesitates for 2 seconds 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 begin and has no hesitation. Mechanic s Assistant: Will the headlights turn on? Is the battery abundantly 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 correspondingly far? I ve cleaned the MAF sensor. Checked for associates in the intake. in the same way as I put my Turbo OBDII app on, all seems fine except that the TPS stays constant on the subject of 30%. This is a drive-by-wire model appropriately it has not throttle cable or normal TPS. I take the TPS is integrated in the manner of the throttle controller/motor. Mechanic s Assistant: whatever else you want the mechanic to know back I be close to 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 tiny more roughly the suffering history. It currently has a master tech credited idle expose run valve and tps installed. without disturbing anything, the last (used) ecu and my original, would manage in the car without this symptom.
This could be a large vacuum leak ,with the MAF partnered it is abandoned measuring the let breathe that is getting subsequently the MAF, as a result if the intake manifold is sucking in expose the freshen to fuel ratio will be agreed out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. similar to carb cleaner spray can vaporizer in the place of the hissing next the engine organization and similar to you hear the engine stall or rev far along there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.