I have a 2004 ES330 past a hestitation problem. It is fine from a full stop but next I go concerning turns on onto highway ramps, when I distress 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 manner of the similar engine and it jumps off the start and has no hesitation. Mechanic s Assistant: Will the headlights slant 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 so far? I ve cleaned the MAF sensor. Checked for links in the intake. bearing in mind I put my Turbo OBDII app on, anything seems good except that the TPS stays constant something like 30%. This is a drive-by-wire model correspondingly it has not throttle cable or normal TPS. I say yes 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 be next to you? No, I guess that is it.
I did re-check them tho. The master tech did extensive tests on the air flow meter and said it was good. subsequently I unplug it and control the motor, the car runs prickly and at 850ish. I can abandoned guess that my supplementary rebuilt ecu has an issue, or the tps needs to be re-adjusted, or anyhow my maf has died in the midst of all this. I don't think the tps has that much run in the substitute of rpm though? I think it only adjusts it in the region of 1k..
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you up 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 taking place and is warmed up? oftentimes in engine ham it up many factors may cause the similar symptom(s)