I have a 2004 ES330 later than a hestitation problem. It is good from a full stop but subsequently I go approximately turns on onto highway ramps, like I depress 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 afterward the same engine and it jumps off the begin and has no hesitation. Mechanic s Assistant: Will the headlights point of view on? Is the battery sufficiently charged? With or without headlights on. Relatively additional 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 therefore far? I ve cleaned the MAF sensor. Checked for contacts in the intake. similar to I put my Turbo OBDII app on, whatever seems good except that the TPS stays constant as regards 30%. This is a drive-by-wire model so it has not throttle cable or normal TPS. I acknowledge the TPS is integrated bearing in mind the throttle controller/motor. Mechanic s Assistant: whatever else you desire the mechanic to know before I border you? No, I guess that is it.
I did re-check them tho. The master tech did extensive tests upon the ventilate flow meter and said it was good. bearing in mind I unplug it and manage the motor, the car runs prickly and at 850ish. I can by yourself guess that my further rebuilt ecu has an issue, or the tps needs to be re-adjusted, or somehow my maf has died in the midst of every this. I don't think the tps has that much direct in the every second of rpm though? I think it by yourself adjusts it as regards 1k..
This could be a large vacuum leak ,with the MAF joined it is by yourself measuring the air that is getting in the manner of the MAF, for that reason if the intake manifold is sucking in expose the ventilate 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. subsequently carb cleaner spray spray can in the place of the hissing when the engine organization and past you hear the engine stall or rev higher there is the leak ,could be a bad vacuum hose bad gasket on the manifold.