So I adjusted FIC again. I unplugged TPS, and adjusted screw A down till the top of cam pointed to center roller. Once I did this I adjusted the screw that I circled above with the yellow paint which is throttle valve plate. Depending how far this is adjusted down seems to advance timing. Distributor had to be adjusted back to 10 degrees.
So I turned it 2 full turns once the throttle plate moved. Then I used a nickel to gap the roller on FIC , started truck 1500 rpm, tired adjust IAC but seemed to be turned in to far to get idle down, turned it off and backed the screw out one full turn, adjust roller again, checked timing, Start truck rpm 500, adjusted IAC turned to left about 2 full turns, idles at about 800 now. Adjusted TPS to .45
Test drove around the block, still seem hesitant/sluggish then like get boost, shifts are smooth but don’t feel no power boost
I unhooked IAC and didn’t notice a speed decrease or increase, so when I unplug the IAC should I notice a instance decrease in idle?
The truck runs smooth but idle at normal temp will shift slightly, slight increase then decrease, This happen with IAc plug connected or disconnected. Is IAC bad?
I’m going to get a fuel pressure gage tomorrow and do some more testing.
Going check throttle cable tomorrow also, I know mine is tight but not sure if it’s tight where it’s starting to pull the drum over, which may explain the gap in take off and between shifting gears.
Last edited by Azazel; May 27th, 2019 at 08:42 PM.