Some further thoughts while I'm at it.
The Vacuum valve on the IP has a nice linier movement
on the vacuum gauge. There's only about 15 inches of
vac on the modulator at idle, about 5 with slack taken
up, and about that till it goes to zero at full
throttle. Odd that 5 inches is enough to make it
shift so loose. I hooked the trans modulator directly and solely to
the IP's vacuum regulator and saw much more vacuum, but the result on a test
drive was about the same. Need to replace those two switchover valves. I
pulled the modulator line off again
after another drive this morning, it's solid as a rock
again. I'm going to leave it that way unless someone
tells me I really should jack the line preasure up.
It's lasted this long.
Another question. The 83 300D has only the engine
overload protection, not the engine/trans overload
setup, correct? Manual states that the vent valve on
the firewall by the booster vents at a given boost
which is fine, tested and works, it also says it vents
the ALDA in sudden off throttle situations so the
residual boost isnt moveing more fuel when it's not
needed. Question is how in heck does it manage this?
Either the manual is vague or I missed something.
There's even a vac/elec diagram that shows nothing but
the fused power source and the switched ground from
the intake sensor, but the manual also reads like
there should be the off throttle venting ability there
Lastly, is this model suposed to do the 2nd gear start
deal? Mine seems to not do this, unless it shifts
from 1-2 pretty inperceptably, which is unlikely.
Thanks a bunch..