I had this same problem a month or so ago.
I didn't know I had a pf09 :-(
I had bad idle issues

Changed it to a pf01 like it should be on a l6

It's a pain to set up though. Because it has a switch inside.


You need to see as near to 0 volts as poss at closed throttle.

Then with the slightest movement on the throttle the switch opens and jumps to 5 volts
(Or as near too)
Then at wide open throttle back to 0 volts

I had

Closed - 0.35v
Slight movement - 4.5v
Wide open throttle - 0.2v

It had to decline in voltage as soon as you touch the throttle
.
Hope this helps
Luke