98 Chevy Express Van Wiring Diagram

I have a 2004 ES330 subsequent to a hestitation problem. It is good from a full end but afterward I go approximately turns on onto highway ramps, next I upset the accellarator (sp?) it hesitates for 2 seconds since reving up. I ve taken it to a mechanic and he says it is normal. I have an 2003 Avalon in imitation of the same engine and it jumps off the start and has no hesitation. Mechanic s Assistant: Will the headlights direction on? Is the battery thoroughly 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 so far? I ve cleaned the MAF sensor. Checked for connections in the intake. similar to I put my Turbo OBDII app on, all seems good except that the TPS stays constant something like 30%. This is a drive-by-wire model in view of that it has not throttle cable or usual TPS. I take the TPS is integrated when the throttle controller/motor. Mechanic s Assistant: all else you want the mechanic to know since I connect you? No, I guess that is it.

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Might furthermore be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can reach a quick idiosyncrasy find if you unplug the meter and direct the engine without it. if the engine condition is the thesame next chances are the meter or the association to it is faulty. Its furthermore worth cleaning the MAF sensor wires, as they can get coated following dirt higher than era which after that offsets the reading. Use some gain access to cleaner or brake cleaner to spray onto the wires to surgically remove the dirt upon no account adjoin the wires following everything as they are unquestionably fragile

like I start the car, the engine surges stirring along with 1200 and 2000 rpm put up to and forth. I misrepresented the IAC and the TPS subsequently no fiddle with in symptoms. I have noticed that several Lexus SC's have this similar issue. Prior to this I would have to adjust the idle enthusiasm screw to lower the rpm and it would keep for a while. Now, the engine is for ever and a day surging to the point where I cannot drive it for danger signal of broken to the steer train. Any experienced solution?

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