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If a thermostat is stuck open it will cause the "bubbling". The thermostat opens and closes giving your coolant time to cool off in the radiator. When stuck open the coolant will keep circulating and just get hotter and hotter until overheating occurs. You should change it right away. I hope this will help you. If by "open" you mean that it is stuck in a position which allows coolant to constantly flow then the last answer is FALSE. If it is stuck open, and coolant constantly flows, then your engine will not heat up to the proper temperature. It will constantly be cool, because guess what, that's what coolant flow does. That means your bearings will not expand properly and such causing a host of other engine problems. If it is stuck open, then you need to replace it.
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∙ 18y ago
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What affect will a bad thermostat have on an automobile heating system?
A stuck open thermostat will not allow the coolant to get up to proper temp, thus poor heat from heater. A stuck closed thermostat will not let coolant circulate and will cause the engine to overheat.
What could cause my grand prix to overheat?
check coolant level check thermostat may be stuck closed
Water pump not circulating coolant?
If the pump is not circulating coolant insure that the thermostat is not stuck closed. If the thermostat is ok then the pump will have to be replaced.
Why is coolant bubbling in reservoir tank?
thermostat is stuck shut
What is the cause of Top hosepipe hot bottom hosepipe cold cooling fan still working is it the thermostat or head casket?
Got coolant? Thermostat stuck closed? It could be the head gasket if you are very low on coolant and you cannot figure out where the coolant is going.
Your 2002 Bonneville runs steady at 200 degrees is that normal?
this is normal for this engine, in fact anything short will trip a check engine light. the cause will be a low coolant condition, a thermostat stuck in the open position or a bad coolant sensor. this is normal for this engine, in fact anything short will trip a check engine light. the cause will be a low coolant condition, a thermostat stuck in the open position or a bad coolant sensor.
Why 1994 dodge ram cargo van only blows warm heat at 40 miles per hour and won't heat idling?
Low coolant or stuck open thermostat.Low coolant or stuck open thermostat.
What could be the cause of no heat or very little heat in a 2000 Neon?
Thermostat stuck open. Replace! A low coolant level will also cause this problem. The blend door could be stuck also.
What would cause a 92 jeep cherokee 4.0L to overheat?
Blocked radiator, low on coolant, stuck thermostat, air in cooling system
When coolant temp is low what needs to be done?
Replace the coolant thermostat. It is probably stuck in the open position.
What could cause no heat in a 93 s10 blazer?
Low on coolant, thermostat stuck open, blend door actuator broken or stuck, plugged heater core to name a few.
How do you know if your thermostat is shot?
If the engine is overheating, the thermostat is stuck closed. If the heater is not putting out enough hot air the thermostat is stuck open. Change the thermostat as a normal part of maintenance when changing coolant.
