I have a 2004 ES330 past a hestitation problem. It is fine from a full end but bearing in mind I go a propos turns on onto highway ramps, taking into consideration I afflict the accellarator (sp?) it hesitates for 2 seconds past reving up. I ve taken it to a mechanic and he says it is normal. I have an 2003 Avalon in the same way as the thesame engine and it jumps off the start and has no hesitation. Mechanic s Assistant: Will the headlights aim on? Is the battery abundantly 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 as a result far? I ve cleaned the MAF sensor. Checked for contacts in the intake. in the same way as I put my Turbo OBDII app on, all seems fine except that the TPS stays constant something like 30%. This is a drive-by-wire model appropriately it has not throttle cable or normal TPS. I take on the TPS is integrated taking into account the throttle controller/motor. Mechanic s Assistant: anything else you desire the mechanic to know back I link up you? No, I guess that is it.
Might next be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can attain a fast malfunction locate if you unplug the meter and manage the engine without it. if the engine condition is the similar later chances are the meter or the association to it is faulty. Its plus worth cleaning the MAF sensor wires, as they can get coated in the same way as dirt higher than era which after that offsets the reading. Use some entrance cleaner or brake cleaner to spray can onto the wires to surgically remove the dirt on no account be next to the wires like everything as they are unquestionably fragile
This could be a large vacuum leak ,with the MAF similar it is on your own measuring the expose that is getting with the MAF, fittingly if the intake manifold is sucking in freshen 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. subsequent to carb cleaner spray spray in the area of the hissing taking into account the engine organization and following you listen the engine stall or rev well ahead there is the leak ,could be a bad vacuum hose bad gasket on the manifold.