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Low engine coolant

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?

Reply to
Soapm
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They're usually mounted on the radiator tank.

Brian

Reply to
el Diablo

You need to have the engine running to bleed air from the system. You also need to take the bleeder screw about half to three quarters of the way out. When you get a constant stream of coolant, then it is bleed. Charles

Reply to
Charles Bendig

Probably about 1/3 way down on the suction side. If there is sufficent air it will move to that side of the radiator, especially as you speed up the engine.

Reply to
HRL

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