I have a 2004 ES330 subsequent to a hestitation problem. It is good from a full stop but once I go almost turns upon onto highway ramps, in imitation of 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 taking into consideration the thesame engine and it jumps off the begin and has no hesitation. Mechanic s Assistant: Will the headlights direction on? Is the battery sufficiently charged? With or without headlights on. Relatively other 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 contacts in the intake. once I put my Turbo OBDII app on, all seems good except that the TPS stays constant in the region of 30%. This is a drive-by-wire model hence it has not throttle cable or usual TPS. I put up with the TPS is integrated in the same way as the throttle controller/motor. Mechanic s Assistant: all else you want the mechanic to know since I attach you? No, I guess that is it.
I did re-check them tho. The master tech did extensive tests on the ventilate flow meter and said it was good. past I unplug it and manage the motor, the car runs gruff and at 850ish. I can single-handedly guess that my supplementary 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 direct in the exchange of rpm though? I think it solitary adjusts it going on for 1k..
This could be a large vacuum leak ,with the MAF related it is on your own measuring the freshen that is getting afterward the MAF, therefore if the intake manifold is sucking in expose the let breathe to fuel ratio will be definitely out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. like carb cleaner spray can spray in the area of the hissing similar to the engine organization and past you hear the engine stall or rev cutting edge there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.