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My Butterfly In Throttle Body Won't Open


Gebo
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My '01 IS300 sucks under acceleration. Cleaned MAP, Throttle body, changed plugs. Took my finger and twisted the accelerator cable to simulate a wipe open throttle. The butterfly valve only went about half way. This would explain the poor acceleration under full throttle. Now, how do I fix this?

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My '01 IS300 sucks under acceleration. Cleaned MAP, Throttle body, changed plugs. Took my finger and twisted the accelerator cable to simulate a wipe open throttle. The butterfly valve only went about half way. This would explain the poor acceleration under full throttle. Now, how do I fix this?

Throttle plate won't open all the way if the engine isn't running. Throttle cable pulls electric motor that does all the work. I think you're barking up the wrong tree. Can you get the engine to rev up with shifter in neutral or park? Is the idle smooth? Is MIL on?

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