A mechanic may have forgotten to reconnect the fan. #Engine coolant over temperature seriesAssuming that transmission temp sensor is working, a series of electronically controlled valves will allow cool radiator fluid to the heat exchanger. Assuming that the coolant temp and cylinder head sensors are working, the electric fan should turn on as needed. Assuming that the water pump is working, fluid cools and circulates back to the engine. Assuming that the thermostat opens, hot fluid flows to the radiator. The mechanical thermostat is the primary regulator. The cooling system has sensors for coolant temp, cylinder head temp, and transmission temp. Our experts will take a look for you and determine if your cooling fans are the underlying issue.Since the van's computer is reading the temperature as high, the sensors for coolant and cylinder head are probably working. Cooling fan issues can be caused by electrical issues to the fan motors going bad. If there's an issue with the cooling fans they won't turn on when your vehicle is stopped and it can overheat until you start driving again. Cooling fans engage when your vehicle is stopped to keep air flowing over the radiator. Your radiator exchanges heat with the outside air as it passes. As you cruise down the road air passes through the front grille and the radiator, helping to drop the temperature as coolant keeps the engine itself cool. We can assume that your cooling fans are having an issue if your vehicle is safely cooled down while driving along but temperatures rise when it is sitting still. REASON #1: YOUR RADIATOR FANS AREN'T WORKING Sometimes fixing a problem is as simple as pulling out a plastic bag to clean the grille out, or removing one that got sucked up by your car along the roadway. Debris like litter and leaves can get trapped in the front grille, hindering the function. Without proper air flow from the front grille, your radiator cannot do its job and keep the engine cool. Our skilled technicians can replace your car thermostat without too much hassle it's a commonplace repair that's low cost and easy to manage. These devices can become stuck open or closed over time and stop regulating the coolant flow, leading to several problems including overheating in traffic. Your engine temperature is regulated by a thermostat in the cooling system, adding or stopping the flow of coolant as needed. If your coolant level is full, but your vehicle is still overheating, there could be a problem with the system itself. Wait at least a half-hour after the vehicle was driven before attempting to check the coolant level.Ĭoolant isn't the only factor in keeping your ride cool. However, you should never check the coolant when your engine is still hot! The coolant is pressurized and when you remove that cap steam and scalding hot liquid will gush out from the radiator fill port and can badly burn you. If your coolant level is good it should be nearly at the very top. Checking the fluid level is easy enough by simply popping the good and checking under the radiator cap. Even sitting in traffic at a stoplight can cause the engine to overheat if levels are low enough. If levels drop low again, that can be a sign that your cooling system has a leak somewhere. It's always a good idea to check the coolant in your vehicle when it's overheating. There are four prominent issues we are most likely to discover with your vehicle if it is overheating in traffic. We want to save your engine and restore it to reliable performance levels. If your vehicle isn't cooling down enough to safely operate, it might be a good idea to call for a tow to bring it in for a technician to check out. Bringing your vehicle into our service pros in a timely manner is key to preventing long-term engine damage. If you notice your vehicle is only overheating under certain circumstances, diagnosing the underlying issue can be tricky. Excessive heat can warp and fuse the metal parts of your engine, changing the makeup altogether. Running the engine beyond a safe operating temperature will likely cause major damage, or could completely destroy the engine itself. When your engine is overheating, operating the vehicle becomes a risk.
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