I have a 2004 ES330 considering a hestitation problem. It is good from a full end but gone I go nearly turns on onto highway ramps, once 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 turn on? Is the battery fully charged? With or without headlights on. Relatively additional 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 suitably far? I ve cleaned the MAF sensor. Checked for connections in the intake. like I put my Turbo OBDII app on, everything seems fine except that the TPS stays constant on the subject of 30%. This is a drive-by-wire model fittingly it has not throttle cable or usual TPS. I say yes the TPS is integrated next the throttle controller/motor. Mechanic s Assistant: all else you want the mechanic to know since I be close to you? No, I guess that is it.
Its afterward worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a not at your best pump will every outcome in insufficient fuel bodily delivered to the engine. Might as a consequence be worth cleaning out the idle quickness direct motor / valve as these get clogged stirring subsequently carbon and some brake cleaner washed through helps clear things off.
subsequently I start the car, the engine surges stirring in the company of 1200 and 2000 rpm urge on and forth. I changed the IAC and the TPS when no regulate in symptoms. I have noticed that several Lexus SC's have this same issue. Prior to this I would have to adjust the idle promptness screw to demean the rpm and it would support for a while. Now, the engine is every time surging to the narrowing where I cannot drive it for danger signal of damage to the steer train. Any experienced solution?