I have a 2004 ES330 considering a hestitation problem. It is fine from a full end but in the manner of I go approaching turns upon onto highway ramps, as soon as I pain 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 following the similar engine and it jumps off the begin and has no hesitation. Mechanic s Assistant: Will the headlights viewpoint on? Is the battery thoroughly 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 associates in the intake. past I put my Turbo OBDII app on, whatever seems fine except that the TPS stays constant regarding 30%. This is a drive-by-wire model appropriately it has not throttle cable or normal TPS. I agree to the TPS is integrated taking into account the throttle controller/motor. Mechanic s Assistant: anything else you desire the mechanic to know past 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 virtually the burden history. It currently has a master tech qualified idle air rule valve and tps installed. without upsetting anything, the last (used) ecu and my original, would rule in the car without this symptom.
This could be a large vacuum leak ,with the MAF connected it is only measuring the ventilate that is getting subsequently the MAF, therefore if the intake manifold is sucking in air the expose 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. in the manner of carb cleaner spray can spray can in the area of the hissing in imitation of the engine management and behind you listen the engine stall or rev well along there is the leak ,could be a bad vacuum hose bad gasket on the manifold.