Re: [DML] Re: Rich Fuel mix with High Idle

["Rustproof" <Rustproof@xxxx>]

Thanks for all of your responses! But still, I am up the creek.
The car has only 4900 miles on it and it has been completely restored with
the frame off. It is in pristine condition in and out. The cat is brand new
and clean as a whistle. I removed the original cat that was overheated
(twice) about a week ago. It was clean as well but I had planned on putting
in a new exhaust system anyway for appearance sake. The entire exhaust
system is also new. The throttle body butterfly moves freely and closes
completely. This engine is absolutely clean with a completely new fuel
system. Tank, lines, pump, filter, fuel distributor, the works. No varnish
anywhere. I can find no vacuum leaks. The O2 sensor was replaced a day or
so ago. Signal from the ECU seems to be OK and the Idle control valve is
functioning with a normal duty cycle. (except during cold startup when the
sensor is ignored by the ECU prior to 350 degrees warm-up sampling) The
thermo-time switch seems to be doing it's thing. When the CO mix screw is
set so the engine runs at 950 rpm at idle, there is no overheat condition.
When this baby is set to idle at 950, there couldn't be a sweeter running
engine. (no exaggeration) Smooth, VERY powerful and responsive.
Unfortunately, once I shut it off.....it doesn't want to restart. Today I
will tear out the cold start valve and see what might be awry in
there...Stay tuned.
Rustproof
vin 1559