I have a 2004 ES330 as soon as a hestitation problem. It is fine from a full end but past I go on the subject of turns on onto highway ramps, in the same way as I pain the accellarator (sp?) it hesitates for 2 seconds in the past reving up. I ve taken it to a mechanic and he says it is normal. I have an 2003 Avalon taking into consideration the same engine and it jumps off the begin and has no hesitation. Mechanic s Assistant: Will the headlights direction on? Is the battery fully charged? With or without headlights on. Relatively other 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 thus far? I ve cleaned the MAF sensor. Checked for links in the intake. as soon as I put my Turbo OBDII app on, whatever seems good except that the TPS stays constant in the region of 30%. This is a drive-by-wire model consequently it has not throttle cable or usual TPS. I endure the TPS is integrated later than the throttle controller/motor. Mechanic s Assistant: whatever else you desire the mechanic to know in the past I border you? No, I guess that is it.
Its as well as 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 repercussion in insufficient fuel monster delivered to the engine. Might next be worth cleaning out the idle readiness run motor / valve as these acquire clogged up later than carbon and some brake cleaner washed through helps forgive things off.
following I start the car, the engine surges up together with 1200 and 2000 rpm help and forth. I changed the IAC and the TPS later no amend in symptoms. I have noticed that several Lexus SC's have this similar issue. Prior to this I would have to adjust the idle keenness screw to humiliate the rpm and it would keep for a while. Now, the engine is for eternity surging to the reduction where I cannot steer it for alarm bell of damage to the drive train. Any experienced solution?