I have a 2004 ES330 afterward a hestitation problem. It is good from a full end but as soon as I go in relation to turns on onto highway ramps, in the manner of 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 behind the same engine and it jumps off the start and has no hesitation. Mechanic s Assistant: Will the headlights slant on? Is the battery adequately 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 consequently far? I ve cleaned the MAF sensor. Checked for contacts in the intake. past I put my Turbo OBDII app on, everything seems good except that the TPS stays constant regarding 30%. This is a drive-by-wire model so it has not throttle cable or usual TPS. I understand the TPS is integrated when the throttle controller/motor. Mechanic s Assistant: whatever else you desire the mechanic to know previously 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 tiny more nearly the hardship history. It currently has a master tech certified idle ventilate rule valve and tps installed. without disturbing anything, the last (used) ecu and my original, would run in the car without this symptom.
This could be a large vacuum leak ,with the MAF similar it is unaided measuring the ventilate that is getting next the MAF, appropriately if the intake manifold is sucking in let breathe the let breathe to fuel ratio will be entirely out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. afterward carb cleaner spray spray in the area of the hissing like the engine paperwork and past you listen the engine stall or rev vanguard there is the leak ,could be a bad vacuum hose bad gasket on the manifold.