Ripping out automatic idle speed circuit

["content22207" <brobertson@xxxx>]

Actually all you need remove to disable automatic idle speed circuit
is the short piece of hose connecting motor to cold start tube. That's
all. (Of course loose ends need to be plugged with vacuum caps). And
nothing needs to be added -- manual screws are already in manifold.
Furthermore, you can jump back and forth between the two simply by
tightening screws and putting short hose back.

I do recommend replacing O rings on the brass screws to ensure vacuum
tight (bottoms are tapered into seats so this isn't an issue when
snugged down).

Note that throttle plate microswitch also activates spark advance cut
off solenoid. If it doesn't work, car will be way over advanced at
idle. Vacuum chambers on CPR only respond to sudden CHANGE in vacuum,
so they can't help. Sometimes wonder how many owners are cranking mess
out of fuel mixture screw trying to get RPM's down when problem is
actually ignition timing (over advance).

Bill Robertson
#5939

> 
> Now if the manual by-pass on your car works, and you're happy with
it, then=
> 
> by all means, go with what you're most comfortable with. However,
for futur=
> e 
> referance, you might want to spend a few minutes making sure that the 
> Microswitch is being fully depressed before ripping out/moddifying
the enti=
> re 
> Idle Speed Ciruit. It's a helluva lot easier, and cheaper!
> 
> -Robert
> vin 6585 "X"