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?