I have a 2004 ES330 in the manner of a hestitation problem. It is fine from a full end but bearing in mind I go with reference to turns upon onto highway ramps, considering I sadden the accellarator (sp?) it hesitates for 2 seconds before 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 begin and has no hesitation. Mechanic s Assistant: Will the headlights incline on? Is the battery sufficiently 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 thus far? I ve cleaned the MAF sensor. Checked for connections in the intake. when I put my Turbo OBDII app on, everything seems good except that the TPS stays constant on the subject of 30%. This is a drive-by-wire model in view of that it has not throttle cable or usual TPS. I take the TPS is integrated bearing in mind the throttle controller/motor. Mechanic s Assistant: anything else you want the mechanic to know in the past I border you? No, I guess that is it.
Its then worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a under the weather pump will every consequences in insufficient fuel brute delivered to the engine. Might then be worth cleaning out the idle readiness manage motor / valve as these get clogged occurring once carbon and some brake cleaner washed through helps forgive things off.
I'm reviewing your question now, and will say help like your answer ASAP. Rgds Greg. What fault codes realize you have. Does the engine direct later than the MAF disconnected. later the loud hissing hermetic this could be your problem. This could be a large vacuum leak ,with the MAF linked it is on your own measuring the let breathe that is getting later than the MAF, appropriately if the intake manifold is sucking in expose the let breathe to fuel ratio will be no question out and cause the engine to stal