: thermostat

04-29-07, 11:27 AM
Car is overheating might be the thermo just wondering what would happen if I left the thermostat out

04-29-07, 11:58 AM
The Northstar requires a thermostat to control engine circulation and flow through the radiator. The design intent of the cooling system will be messed up without the proper thermostat.

Almost guarenteed to overheat if you run without the thermostat. If you suspect your's is faulty, it is no more work to install the proper OEM piece than it is to completely remove a suspected faulty one.

Test your's on the stove with a trusted thermometer; shoud be fully open at 185 degrees.

04-29-07, 12:15 PM
Got it thanks

04-29-07, 06:22 PM
Yep......lotsa input to the control systems from coolant temperatures.

04-29-07, 06:28 PM
Is there a way to look at the thermo and see if its gone bad and is a after market thermo good or shoukd I go oem

04-29-07, 09:48 PM
It is probably hard, if not impossible to tell if it has failed my looking at it. The wax leaks out of the plunger.

A quality aftermarket like Stant would work. Not sure who makes the OEM stat. Might be Stant.

04-30-07, 10:54 AM
Is your engine actually overheating? Or is just getting high temps?

I thought you could check to see if both of your fans are coming on.

05-01-07, 12:34 AM
Car is overheating 02 deville overheats and says check coolant level when there's plenty of coolant in it, the top hose running to the radiator gets hot while the bottom one stays cold any ideas

05-01-07, 12:41 AM
Replace the thermostat.