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Make a stop-over and thoroughly check your engine but before that, let the engine cool down.Ĭheck next to the coolant level, and if it tells you that it is low, you must add engine coolant to make it run again. The worst case is if you need to go home, then you should check if your engine is overheating or not. Do not continue to drive and make a stop, for it might cause trouble in the end. Whenever you notice this warning sign, please don’t ignore it. It would be best to do it frequently to prevent getting stranded in a deserted place. The coolant light will flash to alert you and avoid further engine damage if it goes under the threshold level.īefore you go anywhere or plan to travel to a faraway place, you should first check the coolant level, and filling it up is a standard operating procedure. Its task is to absorb heat produced by the car’s engine and move it to another area where it may be dispersed and restarted-generally, having a coolant light flashing means that you have a low coolant level on your car. Coolant Level LowĮngine coolant is a combination of ethylene glycol and water. ![]() ![]() If not, then the issue isn’t with the level sensor anymore. In many situations, the sensor is built into the coolant reservoir, necessitating the replacement of the whole reservoir.Īdditionally, you may test the sensor by disconnecting the harness connection and bridging the two wires with a paper clip to see whether this turns off the light. The resistance should gradually change in this manner, and if the resistance on the temperature remains constant or doesn’t change, then both sensors must be replaced. If both devices are working, your next move is to remove the harness and inspect the sensor thoroughly for resistance.īecause whenever the coolant level is full, there shouldn’t be any resistance since the level is in a closed-loop system.Īfter inspecting, check the temperature sensor if it is cold and turn the engine on to check if it becomes heated. You should check your coolant temperature and level sensors to ensure that both components work. If your coolant light is flashing read continuously, it mainly shows that you have a problematic sensor that is not communicating with your computer system at that moment. 6 Common Causes Of Coolant Light Flashing 1. Below are some tips and tricks to handle coolant light flashing problems. If you are looking for a solution, then you’ve come to the right place. Also, it will take enough knowledge to determine the cause and how to fix it. Sometimes it’s not easy to tell what’s wrong until the issue has been diagnosed. It would be best if you never disregarded any indication on the dashboard concerning the coolant temperature should. Not knowing the real reason behind this problem will lead you to a stop in your ride. Looking forward to the days ahead, and suddenly while driving, you notice that you have a flashing coolant light in your dashboard. 6 Common Causes Of Coolant Light Flashing.R134a and R1234YF have different low pressure port types, so you should never use a recharge adapter to add the wrong type of refrigerant. You cannot add R1234YF refrigerant to a R134a system nor can you add R134a refrigerant to a R1234YF system. There is an AC sticker in the engine bay of your 1999 Century that indicates if it requires R134a refrigerant or the newer R1234YF type to do a recharge. What type of refrigerant does a 1999 Buick Century use? Air conditioning systems can vary so it is critical that you check the sticker in the engine bay to determine your Century refrigerant type. Typically the AC recharge kit you buy will have enough capacity to add enough freon to get the AC in your Century to blow cold air. In addition to cooling, freon lubricates the compressor when it runs. When your compressor kicks on, add freon to the correct pressure. Once you find the 1999 Century AC low pressure port cap, hook up the can of refrigerant to the low pressure port. How do you recharge AC in a 1999 Buick Century? The low side AC port location is the first thing to find when you are looking for how to put freon in a car. If there is a problem with your compressor or evaporator, adding freon will not restore cooling. ![]() The A/C system in your Century consists of a compressor that is belt-driven, an evaporator and freon. Most refrigerants include a leak sealer that will seal small leaks in addition to filling the R134a freon. Recharging the freon in your AC system is an inexpensive and easy first step to restoring the cooling capacity of your A/C system. When the air conditioner in your 1999 Buick Century starts blowing hot air, you likely have a freon leak.
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