RonA
Active member
- Joined
- Feb 26, 2008
- Messages
- 11,068
hmmm.... wonder if this is what Weston is alluding to as well?
:hehe:
hmmm.... wonder if this is what Weston is alluding to as well?
^understood; I like to clarify.
And no, havent run truck with afc off...figured oil would be slinging out everywhere, HA. But I will, as I am going to have some time available soon. Let's carry on!
^ISWYDT
It appears to me that the ability of the AFC to control off-idle and lower end fueling/response isnt as precise as its ability on the upper end of its operation range? And by that I am thinking about spring rate versus AFC arm position at the lower end of measured movement..... or is that completely wrong?
Have you ever gotten the afc arm back so far that when you put it in drive and step on the pedal nothing happens. Then when you start turning the pre-boost screw a little bit at a time it starts working.
Have you ever gotten the afc arm back so far that when you put it in drive and step on the pedal nothing happens. Then when you start turning the pre-boost screw a little bit at a time it starts working.
Exactly what I do, when you cut the bottom end fuel so much that you can drive off from a stop light like a normal truck with your foot on the floor, you are now in control of the bottom end fuel, I usually go in 1/2 turn increments on the pre-boost fuel screw from there.
Jim
I knew it would make sense to you Jim. I'll have to show you the piece I made to take the place of the diaphram and cover. It always seemed like they went out of their way to make it hard to get full travel with a heavy spring and not coil bind. The afc needs to sit all the way to the rear but still allow full rack travel. never saw the point of the slotted cover unless you are running everything stock.
^it's all in the spring selection/preload from the afc. I too have done that, no smoke, no-go, nada. But like i said earlier, I slid the housing all the way forward (was all the way back.)