I have a 2004 ES330 in the manner of a hestitation problem. It is fine from a full end but later I go as regards turns upon onto highway ramps, behind I depress the accellarator (sp?) it hesitates for 2 seconds back reving up. I ve taken it to a mechanic and he says it is normal. I have an 2003 Avalon following the thesame engine and it jumps off the begin and has no hesitation. Mechanic s Assistant: Will the headlights slope on? Is the battery thoroughly charged? With or without headlights on. Relatively further 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. following I put my Turbo OBDII app on, all seems good except that the TPS stays constant approximately 30%. This is a drive-by-wire model therefore it has not throttle cable or usual TPS. I undertake the TPS is integrated bearing in mind the throttle controller/motor. Mechanic s Assistant: everything else you want the mechanic to know since I be next to you? No, I guess that is it.
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I did re-check them tho. The master tech did extensive tests upon the expose flow meter and said it was good. considering I unplug it and direct the motor, the car runs rough and at 850ish. I can isolated guess that my new rebuilt ecu has an issue, or the tps needs to be re-adjusted, or somehow my maf has died in the midst of all this. I don't think the tps has that much control in the oscillate of rpm though? I think it unaccompanied adjusts it in this area 1k..
This could be a large vacuum leak ,with the MAF linked it is lonely measuring the air that is getting with the MAF, for that reason if the intake manifold is sucking in freshen the ventilate to fuel ratio will be unquestionably out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. once carb cleaner spray vaporizer in the area of the hissing in the same way as the engine dealing out and following you hear the engine stall or rev well ahead there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.
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