Absolute Throttle Position

Can anyone plug in their OBDII diagnostic tool and tell me what their Absolute Throttle Position is set at? For a V8, 4WD, AC.

The Haynes manual states that it should be set between 14.4% and 16%. Just wanted to know what others' are set at who are having zero issues.

 

14.9% @ 700 RPM.

 

Thank you!

What about when the truck is off but the ignition is in the ON position?

 

18.8%

 

I realize that 18.8% is outside of what the Haynes says, but the truck purrs like a kitten, and as far as I know, it's never been adjusted. It seems like it would make more sense to adjust at idle? Or, perhaps I need to re-adjust mine? Maybe someone with more knowledge on this will chime in.
Paging Dr. @shifty`

 

Appreciate you checking that!

I wonder if the Haynes manual is incorrect, cause if yours is at 18.8% and is running fine, why set it between 14.4 and 16 like the manual states.

I adjusted mine down from 16.1% to 15.2% a few days ago and am now wondering if I should bump it up beyond 16.1%.

 

Common sense says that a larger % open without the engine running would make sense. Needs more air initially for start. After the engine starts, it drops the % of air entering the intake to avoid a rich condition. If it is initially set at a lower %, after the engine fires it will create a lean condition it an almost 4% reduction holds true. That would explain why it is running poorly. IDK. Just spit-balling here.

 

You also have a cable actuated throttle body IIRC. Could be way different for the electronically controlled TB. In fact, I'm not even sure I have adjustment. Yes. Confirmed. This is only applicable for a 2000-2002. The manual states that on 2003 and later models, the TP sensor is NOT removable or adjustable.

 

Ah, that's a good catch. Anybody have a 2000-2002 that would be willing to check?

Also, I still believe that the 2000-2002 are drive by wire, except they use the Accelerator Pedal Position Sensor and cable to serve as a backup.