Hello,
92 Pontiac Bonneville with a 3.8L (no supercharge). A while ago you guys helped me out when the temp would go up while the car was idleing. Last few days I have been getting a low engine coolant alarm on the dash board once the engine warms up (not right away). The overflow tank is up to the mark for hot and the radiator is full. I opened the brass screw on top of the thermostat housing to see if air would bleed out but no air.
The car does not run hot so i'm thinking the computer is getting bad information. Where would the sensor be that sends this information to the computer? I don't see any wires going to the overflow tank??? Isn't that the normal place?