I have a 2004 ES330 when a hestitation problem. It is fine from a full stop but next I go just about turns on onto highway ramps, similar to I pain the accellarator (sp?) it hesitates for 2 seconds since reving up. I ve taken it to a mechanic and he says it is normal. I have an 2003 Avalon taking into account the same engine and it jumps off the start and has no hesitation. Mechanic s Assistant: Will the headlights slant on? Is the battery abundantly 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 so far? I ve cleaned the MAF sensor. Checked for links in the intake. in imitation of I put my Turbo OBDII app on, all seems good except that the TPS stays constant on 30%. This is a drive-by-wire model therefore it has not throttle cable or normal TPS. I agree to the TPS is integrated in the same way as the throttle controller/motor. Mechanic s Assistant: whatever else you want the mechanic to know in the past I link up you? No, I guess that is it.
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Its plus worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a not a hundred percent pump will all result in insufficient fuel physical delivered to the engine. Might moreover be worth cleaning out the idle zeal govern motor / valve as these acquire clogged up in the same way as carbon and some brake cleaner washed through helps free things off.
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you happening to date upon every maintenance; spark plugs fuel filter pcv vlave etc? have you performed a visual inspection and listened to engine as it warms occurring and is warmed up? oftentimes in engine do its stuff many factors may cause the thesame symptom(s)
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