I adjusted the spring tension on my 85 =
GL Digijet 4
days ago. The effect between spring tension and 02 sensor output =
went
backwards from what I expected.
I started with 1.37 AFM volts at idle. =
I turned the
notched black wheel in the AFM 10 notches clockwise, the AFM volts went =
to 1.10.
Which I expected.
But the 02 started at .75 volts open =
loop, and
after the spring tension adjustment the 02 went to .9 volts. Opposite of =
what I
expected.
So I moved the AFM tension to 10 =
notches less than
I had to begin with, the AFM volts went to 1.48. Which I =
expected.
But now the 02 went to .7 volts, the =
opposite of
what it was supposed to do again.
The throttle valve controls the air to =
the engine
and I didn't change that, all I changed was the open loop AFM signal to =
the ECU.
With the greater AFM volts it should have added more fuel not
less.
I left it at the 10 notches less and =
the .7
volts 02, and put it back in closed loop. The idle surge is gone =
for now
(usually happens on a warmer day anyhow) and the digitool is hooked
up.
No I'm not crazy, or at least not since =
I got out
of my 20's.
Mark Ingalls