Chevy 350 Engine Vacuum Hose Diagram

I have a 2004 ES330 afterward a hestitation problem. It is fine from a full stop but bearing in mind I go around turns on onto highway ramps, in imitation of I upset the accellarator (sp?) it hesitates for 2 seconds past reving up. I ve taken it to a mechanic and he says it is normal. I have an 2003 Avalon like the same engine and it jumps off the start and has no hesitation. Mechanic s Assistant: Will the headlights slant 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 for that reason far? I ve cleaned the MAF sensor. Checked for connections in the intake. like I put my Turbo OBDII app on, anything seems fine except that the TPS stays constant not far off from 30%. This is a drive-by-wire model fittingly it has not throttle cable or usual TPS. I consent the TPS is integrated past the throttle controller/motor. Mechanic s Assistant: everything else you desire the mechanic to know since I border you? No, I guess that is it.

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I started the car up this morning, it starts up and runs at 1750 and within a minute or thus climbs beyond 2500.. It is presidency smooth though, just pretentiousness innovative than it should be. I also checked the throttle screw plate/return screw, on purpose turned it out and nothing changed. put it back to exactly where it was. No vacuum leak sounds and every links verified. I setting fine not quite them as I've been in there a bunch of times..

This could be a large vacuum leak ,with the MAF combined it is and no-one else measuring the air that is getting as soon as the MAF, fittingly if the intake manifold is sucking in freshen the freshen to fuel ratio will be categorically out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. with carb cleaner spray spray can in the place of the hissing taking into consideration the engine dispensation and subsequently you listen the engine stall or rev far along there is the leak ,could be a bad vacuum hose bad gasket on the manifold.

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