I have a 2004 ES330 later a hestitation problem. It is good from a full end but later than I go a propos turns on onto highway ramps, once 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 once the same engine and it jumps off the begin and has no hesitation. Mechanic s Assistant: Will the headlights aim on? Is the battery adequately 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 therefore far? I ve cleaned the MAF sensor. Checked for connections in the intake. following I put my Turbo OBDII app on, everything seems fine except that the TPS stays constant vis--vis 30%. This is a drive-by-wire model as a result it has not throttle cable or normal TPS. I take the TPS is integrated considering the throttle controller/motor. Mechanic s Assistant: all else you want the mechanic to know before I link up you? No, I guess that is it.
I did re-check them tho. The master tech did extensive tests on the let breathe flow meter and said it was good. bearing in mind I unplug it and run the motor, the car runs sharp and at 850ish. I can forlorn guess that my new rebuilt ecu has an issue, or the tps needs to be re-adjusted, or someway my maf has died in the midst of all this. I don't think the tps has that much run in the swing of rpm though? I think it unaccompanied adjusts it all but 1k..
This could be a large vacuum leak ,with the MAF joined it is forlorn measuring the freshen that is getting in the manner of the MAF, for that reason if the intake manifold is sucking in expose the air to fuel ratio will be utterly out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. past carb cleaner spray vaporizer in the area of the hissing as soon as the engine giving out and taking into consideration you listen the engine stall or rev well ahead there is the leak ,could be a bad vacuum hose bad gasket on the manifold.