2003 tacoma 3.4 throttle body

Joined
Apr 26, 2010
Messages
344
 
 
I just cleaned my throttle body this afternoon. I noticed when I went to open the butterfly to clean the around it there was play in shaft. I turned the shaft 1/4 to 1/2 inch the butterfly did not move. so at full throttle the butterfly was not totally flat. Is this normal?
 
Joined
Feb 21, 2011
Messages
348
Yes that us normal. It is fly by wire meaning that there is an accelerator position sensor which senses how far you are pressing the gas pedal and electronically opens the throttle. In case of a failure of the system there is a limp home mode which mechanically opens the throttle partially when you depress the gas pedal more than about halfway giving you just enough power to limp home. With no power to the system (key off) it is in the mechanical limp home mode and will only open the throttle partially. If you turn the key on and manually manipulate the throttle it will begin to open as soon as you turn it and will open all the way.

Hope that makes sense.

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