3/6/2024 0 Comments 2003 saturn ion coolant light![]() Keep an eye on your temperature gauge and check your coolant level regularly. If no leaks are found, check the engine oil for signs of coolant contamination. If leaks are found, replace the hoses and/or tighten the clamps as necessary and return the vehicle to the customer. Keep in mind that this method does disable a key safety device that is designed (poorly) to warn you in the even of a coolant leak. Inspect all coolant hoses and connections for coolant leaks. That warning really has been irritating me. Sorry this was long but I hope that it helps someone. Also it's a good idea to secure the harness to something nearby so that it doesn't flop around when you are driving.Īll done. If all works well, use electrical tape to seal up the end of the harness so moisture doesn't get in. If the coolant light doesn't go away you may have a break in the wire somwhere or a bad connection to the jumper.ĥ. The coolant level sensor has only one job and that is to tell the computer when coolant is low so you don't have to worry that you may be causing any other problems by doing this. Typically the sensor, which monitors the coolant temperature, knows how to adjust to varying temperatures depending up the status of your car running, warming up, or cold. When you insert the jumper the message should go away imediately. Your coolant light will come on when the sensor senses an incorrect change in the temperature in your system. You can also insert the jumper while the car is running (be careful, the coolant bottle will be hot) because the harness is removed from the sensor the coolant warning should already be displayed. Start your car and ensure that the warning is no longer displaying. push the jumper you just made into the end of the harness connector.Ĥ. Find a large paper clip and use needle nose plyers to make a "staple" shaped jumper that is about 1/4 inch wide (about the distance between the two contacts on the harness) and about 3/8 inch long.ģ. Unplug the sensor harness from the bottom of the coolant bottle.Ģ. I plan on replacing the bottle eventually but right now money is tight and I don't need the sensor to tell me what my own eyes and my car's temperature gauge can tell me for now. I found a way to bypass the sensor for a BMW though and thought I would try it. I couldn't find a tread involving a Saturn that talked about a solution other than having a tech charge me lots of money to replace the whole bottle. (all completely normal) I had a strong feeling that the coolant level sensor in the coolant bottle was bad and had read about how it needed to be replaced by a tech and all but I wonderred if there was a way to defeat the sensor since I check my levels all the time anyway because the sensor was really just giving false info anyway. The car runs perfectly, never overheats and the coolant bottle is always full to the "cold fill level" line when cold and slightly higher than that when hot due to the expansion of the fluid. At O'Reilly Auto Parts, we carry replacement coolant temperature sensors and switches for most vehicles, and can also test Check Engine lights for free to help you make an accurate and informed diagnosis before starting your repair.I have a 2005 Ion that had been displaying the "coolant" message for quite some time. If your temperature light fails to activate, or if your dash gauge is not working, you may need to replace your coolant temperature sensor to stay aware of problems in your cooling system. If your engine is frequently overheating or using more gas than usual, this could be an indication of cooling system problems, so it's best to check your coolant level and condition to determine the source of the issue. In some cases, you may not notice any symptoms of failure, but your engine may overheat without warning because your temperature light does not activate. This may result in especially low or high coolant temperature readings, your vehicle underperforming, or your Check Engine light may come on. With time and due to exposure to high temperatures, the coolant temperature sensor or switch may wear out and send inaccurate readings or a complete lack of signal to the ECM, gauge, or warning light. Coolant temperature sensors also deliver information to your engine control module (ECM) to prevent engine damage by engaging limp mode or making other adjustments. This helps prevent damage to your engine due to overheating, which may be caused by low cooling system levels, radiator or thermostat failure, and other factors. The coolant temperature sensor on your vehicle monitors the temperature of your cooling system and feeds the temperature gauge or temperature warning light on your dash.
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