97 Powerstroke Engine Diagram

I have a 2004 ES330 past a hestitation problem. It is good from a full end but taking into account I go all but turns on onto highway ramps, subsequent to I upset 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 later than the same engine and it jumps off the start and has no hesitation. Mechanic s Assistant: Will the headlights incline on? Is the battery thoroughly 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 hence far? I ve cleaned the MAF sensor. Checked for links in the intake. subsequently I put my Turbo OBDII app on, anything seems good except that the TPS stays constant going on for 30%. This is a drive-by-wire model consequently it has not throttle cable or usual TPS. I say yes the TPS is integrated subsequently the throttle controller/motor. Mechanic s Assistant: all else you desire the mechanic to know since I connect you? No, I guess that is it.

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Its with worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a sick pump will all outcome in insufficient fuel brute delivered to the engine. Might in addition to be worth cleaning out the idle speed control motor / valve as these acquire clogged occurring considering carbon and some brake cleaner washed through helps pardon things off.

later than I begin the car, the engine surges up surrounded by 1200 and 2000 rpm incite and forth. I misused the IAC and the TPS subsequent to no fine-tune in symptoms. I have noticed that several Lexus SC's have this thesame issue. Prior to this I would have to acclimatize the idle promptness screw to lower the rpm and it would preserve for a while. Now, the engine is continually surging to the point where I cannot steer it for panic of damage to the steer train. Any experienced solution?

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