#1-clugged radiator #2-bad water pump #3-air in system #4-bad temp sender switch
You may have the thermostat in backwards. The spring side of the thermostat faces into the engine.
You could have a bad thermostat, just because its new doesn't mean its good, TRUST ME ON THAT, or you could possible have an air pocket in the cooling system.
Thermostat is stuck closed.
could be your thermostat is stuck or perhaps and needs to be replaced.
If it's just occasionally, it may be a sticky thermostat.
generally if an engine overheats, but then does not overheat when heater is turned on, is a good indication that the engine thermostat is stuck and needs replacing
Check your oil and see if it's milky. If it is then it's leaking inside. Does it steam out of the tailpipe? If it does you have a bad head or head gasket. have you replaced the thermostat? if you haven't, do that first, it may be stuck closed.
A bad water pump or thermostat can cause an engine to overheat. A plugged (clogged) radiator or heater core may also cause an engine to overheat.
start with checking thermostat
The thermostat may be installed backwards
Hi, Check to see if your vehicle need to have the thermostat changed or if the radiator is clogged which will make the antifreeze not flow to keep your engine cool. Clogged radiators is a known issue. Hope this helps you.
a. blown headgasket. b. defective thermostat. c. defective radiator. d. no oil, no coolant.