I have a 2004 ES330 in the same way as a hestitation problem. It is fine from a full end but following I go on turns on onto highway ramps, later I pain 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 next the thesame engine and it jumps off the start and has no hesitation. Mechanic s Assistant: Will the headlights turn 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 fittingly far? I ve cleaned the MAF sensor. Checked for associates in the intake. gone I put my Turbo OBDII app on, anything seems good except that the TPS stays constant as regards 30%. This is a drive-by-wire model suitably it has not throttle cable or usual TPS. I understand the TPS is integrated past the throttle controller/motor. Mechanic s Assistant: whatever else you want the mechanic to know before I border you? No, I guess that is it.
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Its then worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a below par pump will every upshot in insufficient fuel brute delivered to the engine. Might in addition to be worth cleaning out the idle quickness govern motor / valve as these acquire clogged taking place in the same way as carbon and some brake cleaner washed through helps clear things off.
subsequently I start the car, the engine surges taking place amongst 1200 and 2000 rpm put up to and forth. I misrepresented the IAC and the TPS similar to no change in symptoms. I have noticed that several Lexus SC's have this similar issue. Prior to this I would have to familiarize the idle readiness screw to degrade the rpm and it would withhold for a while. Now, the engine is for ever and a day surging to the lessening where I cannot drive it for apprehension of broken to the drive train. Any experienced solution?
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