First you will need to find out if you are loosing spark or fuel when it stops running. Could be a weak fuel pump, or ignition module among other things.
SOURCE: location of crank position sensor on 92 chevy corsica 3.1
You will have a no start or stalls after engine gets hot and then cools down restarts, the sensor is on the front of the engine mounted into the cam gear cover if it is not visiable get under the, (here is a picture) car and look.
SOURCE: 95 CHEVY IMPALA SS RUNNIN HOT
You may want to try checking the fans. I have a 95 ss with the same problem. If you disconnect the MAF and then start the vehicle the electric fans will come on. Try driving it like that. That will atleast narrow down your search. If that makes it run cooler then its most likely a problem with the fans. Either a relay or fan switch. Blown head gaskets will usually result in the coolant and oil mixing. Check your fluids for signs of that. I have also read that the radiator cap not sealing properly can cause the coolant system to lose pressure. This reduces the systems ability to circulate the coolant causing it to run hotter. Thats an easy fix. I have not fixed mine yet. I just havent had time. That should be a good place to start. As far as getting a new engine or head gasket they are both really expensive fixes so try any other way u can to fix it first. Hope this helps.
SOURCE: 1991 Chevy Corsica Starts up and Dies 5 minutes later
Sounds like a faulty sensor. Have you changed your fuel filter? Checked all vacuum lines? Any check engine light on?
SOURCE: Engine overheating in traffic or when idling
I'm assuming your car has the Northstar engine?.
Strangely enough,if you remove the thermostat in the Northstar engine, it will overheat, this is because the stat is both a thermostat and a pressure valve.I can't be bothered to explain in detail how the whole cooling system works but please understand that you need to put the stat back in,(or preferably a new one).As for the cooling fans,what you described is normal for the Northstar.
Further to this, look at my profile,I have provided similar solutions for overheating problems.
The most probable cause is air in the system. If all fans kick on then it can only be air in the system or problem would accure when driving too. A pocket of air will cause a small vortex and it take far more pressure to get anything around it. Like fluid. To burp the system....when your car is cooled off, remove the radiator cap and then start it up....it will push all the air out the top and you will see bubbles and maybe even some fluid shoot out. Just make sure you add back to correct levels when all done. This running process has taken me as long as 30 mins to get all the way out. Its easy and free but DO keep an eye on the temp guage while the cars just idealing to get the air out.
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