'99 Lumina Can low cooland sensor shut down engine?

A fellow at work has a '99 Lumina with V-6. It will run for about 10 miles, then dies. After sitting for 15 to 30 minutes, it is good for another 10
miles or so.
He has checked the fuel pump pressure, replaced filter, replace crankshaft sensor, ignition module. He took it to a shop that worked on it for two days, same problem and they could not find anything. There are no computer codes showing up.
The other night, he had it idle to warm up. It died after about 20 minutes and the "Low Coolant" light was on. It is full to the top of the radiator and in the reservoir though. Could this sensor be defective and cause a shutdown of the engine? Where is the sensor located?
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Edwin Pawlowski wrote:

It can be defective, but it will not shut down the engine. It's located in the radiator on that model, I believe. Passenger side, about 1/3 of the way down from the top.
Ian
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Thanks. The search for the real cause goes on.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

I'd check: the oil-pressure/the CAT(plugged up?)/computer(faulty) Some engines use the oil-pressure sensor as an engine safeguard. Low pressure will open the fuel delivery system. A plugged-up CAT might cause the engine to die. With the engine acting this way, it seems there would be trouble codes...possibly the computer is faulty? Just some thoughts.....
Dave S(Texas)
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

The car runs fine when it is running. Even passed the emissions test in this condition so in theory, the CAT should be eliminated? Or if it is plugged, there would not be enough emissions to get a high reading.
Oil pressure sensor has not been checked, nor has the computer aside from the normal plugging in to get codes. The other day he did bypass the coolant level, replaced the thermostat and the water temperature sensor. Whatever it is, seems to be heat related as it re-starts when the car sits for a short time.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.