12/28/2023 0 Comments Cheapest coolant near me![]() ![]() Which maybe tells me the thermostat is not opening up. The lower rad house stays cool to the touch. Seems to do that at idle more than when I'm driving around. Replaced it again, filled the coolant back up and now the car is starting to overheat. I even took it back out and reboiled water to test it again. I have checked and replaced the thermostat already. I opened up the bleeder valve in the back and had coolant coming out of it, then closed it. Then the liquid goes back into the radiator. As I let the car idle, the coolant starts filling up the funnel and eventually overflows until I shut it off. The fans are coming on and the top rad hose is hot to the touch. Here is a related threads for bleeder locations and procedure: You could have a situation where the fans are on and the thermostat has not opened as evidenced by an upper radiator hose not being hard and hot to the touch. You have to make sure the fans have turned on and the thermostat has opened (verifiable by feeling the upper radiator hose). I have never had trouble with the method FLSubies described on any vehicle.but I was facing a bad head gasket so I got much more granular. Have you tried holding it at around 2000 rpm for a while to see if you can get the thermostat to open? If the thermostat doesn't open up, then the coolant will continue to expand and eventually boil over since air is circulating throughout the engine instead of coolant. It expands quite a bit actually and one of the purposes of that funnel is to allow for expansion instead of watching the coolant go all over the floor provided you don't start it filled up too high. What you might be seeing is the coolant expanding with heat which is perfectly natural. Are you sure that it has gotten hot enough to let the thermostat open up which will draw the coolant back in? I shut it off for a few hours and then tried again. That happened when I first used the funnel. If coolant is not regularly monitored, the rust inhibitors stop working, and the cooling system rusts from the inside out.Is it boiling over or changing color while this is happening? Are you getting just above the middle 3 bars on the temp gauge? Fans coming on? Particles of rust will clog radiator and heater passages, causing your engine to overheat. The engine block is the main source of rust in a car’s cooling system. Ultimately some corrosion will take place, even with rust inhibitors. When the coolant’s rust inhibitors get depleted, the confined cooling passages in the engine and radiator are vulnerable to corrosion. Why are coolant flushes important to your vehicle?Ĭoolant is subject to rapid break down because it functions in a hot and hostile environment. If you suspect your vehicle may be having problems with overheating, let our professionals perform a coolant flush on your system. ![]() Replace old coolant/antifreeze with new fluid.Repair and/or replace any components as necessary.Thoroughly inspect the coolant/antifreeze system. ![]() Temperature gauge indicates vehicle is running hotter than normal.Symptoms your coolant/antifreeze system may need service: See your owner’s manual for your vehicle manufacturer’s recommendations. It is recommended for most vehicles that antifreeze be changed seasonally, and fluids replaced every 30,000 miles. A coolant flush and fill prevent these deposits and overheating, which is the most common cause of engine damage and breakdowns. Over time, deposits that can clog the cooling system will accumulate in your vehicle’s radiator. Coolant is usually a 50/50 ratio mixture of ethylene or propylene glycol and water. It is also distributed through the heat exchanger in the passenger compartment when you use the vehicle’s heating system. Coolant, or antifreeze, absorbs heat from the engine and disperses it through the radiator.
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