I have a 2004 ES330 similar to a hestitation problem. It is fine from a full end but taking into consideration I go in this area turns on onto highway ramps, afterward I distress 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 subsequently the similar engine and it jumps off the begin and has no hesitation. Mechanic s Assistant: Will the headlights aim on? Is the battery adequately charged? With or without headlights on. Relatively new 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 appropriately far? I ve cleaned the MAF sensor. Checked for contacts in the intake. next I put my Turbo OBDII app on, whatever seems fine except that the TPS stays constant vis--vis 30%. This is a drive-by-wire model appropriately it has not throttle cable or normal TPS. I endure the TPS is integrated past the throttle controller/motor. Mechanic s Assistant: anything else you desire the mechanic to know since I be close to you? No, I guess that is it.
Thanks for your response. I just checked what you mentioned, that I hadn't already checked, except fuel pressure.Let me tell you a tiny more virtually the misery history. It currently has a master tech attributed idle let breathe manage valve and tps installed. without distressing anything, the last (used) ecu and my original, would govern in the car without this symptom.
when I begin the car, the engine surges occurring surrounded by 1200 and 2000 rpm support and forth. I misrepresented the IAC and the TPS once no alter in symptoms. I have noticed that several Lexus SC's have this same issue. Prior to this I would have to acclimatize the idle enthusiasm screw to demean the rpm and it would retain for a while. Now, the engine is constantly surging to the narrowing where I cannot drive it for distress signal of damage to the steer train. Any experienced solution?