Pat, What I've experienced, and mind you it's only been 3-4 times, is
basically what you describe below. Idling is OK, it's when applying
power and it's only happened when on warmup cycle , eg minutes after
starting.

The last time it exhibited the behavior it stalled then would not start,
though I assume it was b/c it was so rich and maybe I had my foot on the
pedal.

To me, b/c it has only happened on the warmup cycle seems to point to
temperature and the sensor, and or values it might be sending.

Did you say you DID replace your Temp II sensor ?

-john

On 12/7/16 10:14 AM, Pat Spragge wrote:
> John
>
> My last post mentioned the thermostat...I replaced mine and there was no change.
> I am curious about the stalling and hard restart issue you mentioned as I have never experienced that.
> Mine starts easily every time; never stalls. Idle is consistently at 950rpm. If it stumbles I either "feather" or "floor" the accelerator and continue on my way. The stumble always occurs when I am stopped at a light or stop sign and begin to accelerate. This behavior starts about 30-60 secs after a cold start and ends once the temp needle starts to move. Or about 2-3 minutes after starting.
>
> Sent from my iPhone
>
>> On Dec 7, 2016, at 10:02 AM, John Goubeaux <john@UCSB.EDU> wrote:
>>
>> Now someone else mentioned the thermostat as a possibility. So at cold
>> start the thermostat should be closed and slowly open as engine warms
>> up, right?
>>
>> IF it was stuck open while the car was still cold ( ie at startup) my
>> assumption is cold coolant would be circulating back to the engine and
>> not allow the engine to warm it before the thermostat opened as it
>> usually does.  I'm not clear how this would cause an intermittent rich
>> running overload and almost stalling condition but this is where my
>> knowledge of of the fuel injection system is limited.
>>
>> I also don't know how thermostats usually fail, when they do and do they
>> stick open, or just not open all the way up as they should ?
>>
>>
>>> On 12/7/16 9:35 AM, Dan N wrote:
>>> I am wondering if the thermostat could be stuck open intermittently...