I have a 2004 ES330 like a hestitation problem. It is fine from a full end but next I go roughly turns upon onto highway ramps, later I upset the accellarator (sp?) it hesitates for 2 seconds back reving up. I ve taken it to a mechanic and he says it is normal. I have an 2003 Avalon taking into consideration the similar engine and it jumps off the start and has no hesitation. Mechanic s Assistant: Will the headlights slope on? Is the battery thoroughly charged? With or without headlights on. Relatively supplementary 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 for that reason far? I ve cleaned the MAF sensor. Checked for connections in the intake. in the manner of I put my Turbo OBDII app on, anything seems good except that the TPS stays constant nearly 30%. This is a drive-by-wire model thus it has not throttle cable or normal TPS. I assume the TPS is integrated taking into account the throttle controller/motor. Mechanic s Assistant: all else you want the mechanic to know before I affix you? No, I guess that is it.
Its as well as worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a in poor health pump will every repercussion in insufficient fuel innate delivered to the engine. Might as a consequence be worth cleaning out the idle eagerness rule motor / valve as these get clogged going on once carbon and some brake cleaner washed through helps pardon things off.
I'm reviewing your ask now, and will read out incite similar to your respond ASAP. Rgds Greg. What irregularity codes attain you have. Does the engine control past the MAF disconnected. as soon as the loud hissing sealed this could be your problem. This could be a large vacuum leak ,with the MAF aligned it is solitary measuring the air that is getting taking into consideration the MAF, as a result if the intake manifold is sucking in freshen the air to fuel ratio will be definitely out and cause the engine to stal