My Throttle Body Blade
Thread Starter
Burning Brakes
Joined: Aug 2003
Posts: 1,070
Likes: 9
From: MARRIOTTSVILLE MD
My Throttle Body Blade
When I was looking at my stock throttle body I noticed that the blade could
be opened beyond 90 degrees to where it actually would reduce air flow if
opened that far. How does the PCM know to adjust the blade for 90 degrees
and not 110 degrees for a TP of 100% ? I have a BBK throttle body and the
blade has mechanical stop so the blade cannot open past 90 degrees.
be opened beyond 90 degrees to where it actually would reduce air flow if
opened that far. How does the PCM know to adjust the blade for 90 degrees
and not 110 degrees for a TP of 100% ? I have a BBK throttle body and the
blade has mechanical stop so the blade cannot open past 90 degrees.
Safety Car
Joined: Sep 2003
Posts: 3,558
Likes: 2
From: Cape Coral FL
Re: My Throttle Body Blade (INTHERED)
Not sure, but when I log using EFILive, my throttle position sensor never goes to 100%, it always only goes to 96% or so. If I had to guess, I would say that the TPS is servo'ed via the PCM through other sensors such as MAP and MAF. I would think that using measurements from these sensors the PCM can open the blade until it sees less airflow at which point it would reverse until the optimum airflow is realized. There may also be a learn algorithm applied. It would be interesting to know for sure. :lurk:
