2004 Pontiac Grand Am Wiring Schematic

I have a 2004 ES330 later than a hestitation problem. It is fine from a full end but subsequent to I go just about turns upon onto highway ramps, following I depress 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 considering the same engine and it jumps off the begin and has no hesitation. Mechanic s Assistant: Will the headlights twist on? Is the battery abundantly 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 suitably far? I ve cleaned the MAF sensor. Checked for associates in the intake. taking into consideration I put my Turbo OBDII app on, anything seems good except that the TPS stays constant more or less 30%. This is a drive-by-wire model for that reason it has not throttle cable or normal TPS. I admit the TPS is integrated taking into account the throttle controller/motor. Mechanic s Assistant: everything else you desire the mechanic to know in the past I affix you? No, I guess that is it.

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Its next worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a poorly pump will every upshot in insufficient fuel visceral delivered to the engine. Might along with be worth cleaning out the idle eagerness govern motor / valve as these get clogged happening next carbon and some brake cleaner washed through helps forgive things off.

gone I start the car, the engine surges in the works with 1200 and 2000 rpm back up and forth. I misused the IAC and the TPS subsequently no amend in symptoms. I have noticed that several Lexus SC's have this similar issue. Prior to this I would have to familiarize the idle rapidity screw to degrade the rpm and it would hold for a while. Now, the engine is for all time surging to the tapering off where I cannot drive it for bell of broken to the drive train. Any experienced solution?

Picture Schematics for 2004 pontiac grand am wiring schematic

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