I have a 2004 ES330 subsequently a hestitation problem. It is good from a full end but considering I go roughly speaking turns on onto highway ramps, later than 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 as soon as the same engine and it jumps off the begin and has no hesitation. Mechanic s Assistant: Will the headlights position on? Is the battery sufficiently charged? With or without headlights on. Relatively extra 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 consequently far? I ve cleaned the MAF sensor. Checked for associates in the intake. next I put my Turbo OBDII app on, anything seems fine except that the TPS stays constant on the subject of 30%. This is a drive-by-wire model suitably it has not throttle cable or usual TPS. I undertake the TPS is integrated next the throttle controller/motor. Mechanic s Assistant: anything else you desire the mechanic to know back I affix you? No, I guess that is it.
I did re-check them tho. The master tech did extensive tests upon the air flow meter and said it was good. as soon as I unplug it and rule the motor, the car runs harsh and at 850ish. I can isolated guess that my extra rebuilt ecu has an issue, or the tps needs to be re-adjusted, or anyhow my maf has died in the midst of every this. I don't think the tps has that much control in the oscillate of rpm though? I think it deserted adjusts it all but 1k..
subsequently I start the car, the engine surges happening between 1200 and 2000 rpm encourage and forth. I misused the IAC and the TPS afterward no tweak in symptoms. I have noticed that several Lexus SC's have this similar issue. Prior to this I would have to adapt the idle rapidity screw to subjugate the rpm and it would hold for a while. Now, the engine is all the time surging to the reduction where I cannot drive it for distress of broken to the steer train. Any experienced solution?