![]() 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. 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. OBDC looks at a number of sensors including coolant temp, intake air temp and more. This may result in especially low or high coolant temperature readings, your vehicle underperforming, or your Check Engine light may come on. Apparently means coolant did not come up to temperature quickly enough. This housing is tucked up into the firewall and the block so it can be difficult to access. The pump dumps the coolant into the water pipe which mates at the rear of the block with the thermostat housing. Engine coolant / antifreeze circulates through your engine to keep it cool in the summer but wont freeze in the winter. To free the water pump you need to remove the water pipe that runs along the right side of the block. In order to get an accurate reading, your 2.4 liter engine should be cool to the touch when you check it. 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. Checking the engine coolant (also known as antifreeze) level in your 2007 Pontiac Solstice is pretty easy. ![]() 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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