This sounds like it could be related to the oxygen sensor circuit. When
the engine is cold the ECU ignores the O2 sensor. Once the engine warms
up to a certain point the ECU then tries to use the O2 sensor reading as
a basis for adjusting the fuel mixture. It has a lot of leeway in trying
to adjust it and can easily adjust it so far that the engine stops
running. When you turn the key off and then start the engine again the
ECU again ignores the O2 sensor but only briefly. So with an already
warmed up engine restarting clears the O2 sensor circuit for a short
while each time. With a cold engine the O2 circuit is inactive until the
engine warms up.

If it is related to the O2 sensor circuit it could be the sensor, the
wiring to the sensor, or the reference ground wire the ECU uses when
trying to read the sensor. The reference ground wire is the brown wire
that comes out of the small bundle that goes to the distributor
connector. People see this brown wire and assume it has to do with the
distributor but no, it is for the ECU O2 circuit. It needs to connect to
engine metal and needs a clean connection and no other ground wires
should share that connection.

Mark

Kevin Duvernay wrote:
> I do have a spare brand new temp II sensor, we'll try tossing it in. easy
> enough. I suppose it make sense, it actually does seem to run good for
> several more minutes if its started cold...?
>
> On Fri, Feb 27, 2015 at 4:28 PM, Jim Felder <jim.felder@gmail.com> wrote:
>
>>