Question about 2000 Buick Century

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Low coolant light comes on and stays on. Engine runs at normal temp,coolant level is OK and antifreeze mix is 50/50.Wha'ts the problem? Thanks.

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The sensor in the coolant tank has gone bad. It's the module mounted on the plastic overflow tank - with two wires running to it. You can purchase a new one at any auto parts store and install it in less than a minute, or you can just disconnect it.

Bill B

Posted on Sep 13, 2010

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I have a 2013 dodge journey 4 cyl......my coolant tank shows about 1 inch low on coolant ....is it ok to add tap water to bring it up to max level


No , never use tap water ! A 50/50 mix of water and antifreeze ! Is it low when engine is hot or is below add cold mark . Should be two levels hot or cold ! And use distilled water if you make your own 50/50 mix .

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Check engine light flashes only til I reach 30 mph, slow while acceleration, engine temp fluctuated from normal to low on temp gauge, engine rpms seem to drop lower than normal? What is wrong here?


the lowering on the temp gauge indicates a lack of coolant around the bulb of the temp sender unit or a lack of flow around the cooling system
could be from low coolant level or blockage in the coolant system from forming ice ( 16 degrees is -8 degrees Celsius which is below freezing point of water)
I suggest that you check the antifreeze ratio in the cooling system and it should be no less than 50/50 to water
any thing less than 50 % antifreeze in the water will allow the coolant to freeze up which may be your problem
coolant condition should be checked every season as it does deteriorate over time and the % ratio will drop
topping up with normal water is another method of lowering the % point
check with a radiator shop or dealer service center to get the correct % of antifreeze for below freezing conditions and keep it at that point

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My 2006 Caravan temperature gauge goes to red - engine is not overheating. Kick it into a lower gear (automatic trans) and the gauge comes back down. Is it likely the coolant sensor?


Could be.. is the system FULL? Air in it can cause some odd things. When engine and coolant are COLD (as in after sitting over night), open the radiator cap. Top off the overflow res with a 50/50 antifreeze / water mixture to HOT mark. Start engine, turn heat to hot and fan to high. Top off RADIATOR with same 50/50 mixture slowly & gradually. As the coolant circulates, it should bring any AIR trapped in the system (from heater core & engine block) to the radiator where you can replace it with the 50/50 mix. Once the coolant is HOT and stays level - about an inch under the opening, close the radiator. Monitor the overflow res and add as needed. Good luck!

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Normal temperature for a 2005 chevy impala 3.4 l ..is it half or as they say 180 degrees


Normal running temp is around 200-210 (f). If you have a 180 thermostat in there it will cause it to run cooler as it is supposed to have a 195 stat in there. If you have a 195, it may be stuck partially open or the electric fan may be stuck on. If it runs hotter, then the fan isn't coming on or there is an obstruction to either air or coolant flow through the radiator, coolant is low or there is a problem inside the engine such as a cylinder head gasket. If it overheats but the temp seems normal, make sure that you have a 50/50 antifreeze mix. Antifreeze not only keeps it from freezing but also raises the boiling point.
If you have a specific question about any of this just ask and I'll explain that part better.

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Check engine light on, temp gauge in hot position, cold air blowing in compartment


If the temp gauge is hot and cold air is blowing in the passenger compartment, then I would say there would be a blockage or series of blockages in the cooling system. Flush it out and refill with new antifreeze/coolant mixed at 50/50 water to coolant concentration.

Check the codes to see what else may be wrong with the engine.

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The heater will only blow cold air. THe engine is warmed up but no hot air is being produced. What is the problem?


Start simple, check the coolant level, if it's too low, hot coolant won't reach the heater core, resulting in no heat. If the level drops further, the engine overheats. So check the level 1st, if it's ok, what does the engine temp gauge indicate? Is it running cold, normal, hot?

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Low Coolant Light


Why is it low? Leaking? The dumbest thing they sell is a 50/50 mix of antifreeze. You are getting 50% water and 50% coolant. Just buy a 100% antifreeze jug add it first and top it off with water. If the water is not low you may hve a bad coolant level sensor. It snaps into the radiator tank and is easy to replace when cold.

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Coolant level and blue temp light


Manual states that when the fluid is cold it will show up blue then as it wanrms up it goes away. a normal function. It's in the owner manual somewhere.

Aug 10, 2009 | 2000 Volkswagen Beetle

1 Answer

Flashing Red Temp light


This means your car is running too hot. After it cools down check the coolant level and top off as necessary, a 50/50 mix of water and coolant/antifreeze should be fine.

If it it blinks again it is one of two thing, the coolant level is low or the coolant temperature is too high, too high could be an improper water to coolant ratio, i.e. too much water.

Best of luck!

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Were are the sensors for the engine fans in a nissaan sentra gxe


One of the common things that gets missed at times is the radiator is down in cooling antifreeze. The car will act as normal during the warm up cycle and then the temperature guage will rise and then it will slowly come back down as the thermostat opens and/or the electric cooling fans come on. In actuality the engine is overheating, but it is not boiling over. The level of abtifreeze is at just the right level of lowness that you experience this phenomenon. After the engine cools off , (DO NOT REMOVE WHEN HOT - YOU CAN GET SCALDED WITH BOILING WATER/ANTIFREEZE)), remove the radiator cap and check the level within the radiator and also the antifreeze reservoir level. You can buy a 50-50 mix of antifreeze and water that is ready to put into the radiator. If the level in both the radiator and reservoir are correct, you may have a bad thermostat or some other problem.
Bob - 2003 Nissan Sentra SE-R SPEC V

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