Coolant coming out of the overflow bottle in a VZ Commodore can indicate several issues, such as overheating, a faulty radiator cap, or a coolant leak. When the engine heats up, excess pressure can force coolant into the overflow reservoir. If the system is not sealed properly or if there's a problem with the thermostat or water pump, it may also lead to coolant expulsion. It's important to check the coolant levels, inspect for leaks, and ensure the cooling system is functioning correctly to prevent engine damage.
To change the coolant on a VE Commodore, start by ensuring the engine is cool and then remove the radiator cap. Place a drain pan under the radiator and open the drain valve to let the old coolant flow out. Once drained, close the valve and fill the radiator with a 50/50 mix of coolant and distilled water. Finally, run the engine for a few minutes to circulate the new coolant, check for leaks, and ensure the coolant level is correct before replacing the cap.
just add coolant through the over flow bottle slowly until full maybe 2 gallons. then put cap on reservoir and start. check the bottle! if coolant is droping in the bottle you still have air and need to remove the cap and add coolant slowly to force air out. just did thermostat and hoses on 1 today as a matter of fact. Make sure it is G12 coolant as well! special for vw. _doug
it depends on the size of your radiator. Just fill it with the correct coolant and top off as the thermostat opens. This assumes the engine is cold (sitting overnight) when you start the engine. Run the heater at max while you do this to bleed the system. Once you can no more coolant to the radiator or overflow bottle, cap the system and make sure the over flow bottle is topped up.
put coolant into my over flow car was running hot and the coolant erupted like a volcano on the side of the over flow
The hose coming from the thermostat housing connects to the upper part of the radiator and allows coolant to flow into the engine...
The 1999 Ford Taurus does not have a radiator cap. Coolant is added by using the over flow bottle instead of a radiator cap.
If no coolant is coming out of the bleeder valve, it could indicate that the cooling system is not properly filled, leading to trapped air pockets. Additionally, a blockage in the cooling system, such as a clogged hose or radiator, may prevent coolant flow. Lastly, a malfunctioning water pump may also hinder coolant circulation. It's important to address these issues to ensure efficient cooling system performance.
The radiator may be clogged preventing water flow into the engine. With the engine cold, remove the radiator cap. Start the engine and let it warm up to the point where it should open the thermostat. Observe the flow of water in the radiator. If you can't see the water moving, the flow is being impeded somehow. Also suspect the coolant temperature sensor (located next to the thermostat housing).you may have an air pocket in the coolant lines preventing proper flow of the coolant.be sure to flush the system thoroughly to remove any airpockets. There is a bolt on the thermostat housing which you can remove (when cool) that by-passes the thermostat, allowing you to fill coolant. Use a small funnel and fill to top, then replace the bolt. This will allow the coolant in the block to reach water pump, heating thermostat, and circulating the coolant through radiator, etc.Also, remove the overflow bottle, and using a stiff wire (coat hanger in my case) make sure the pipe connecting the bottle to the system is clear. My case I had a calcium-like blockage stopping flow and creating air/steam in system.I just changed the water pump, thermostat, flushed the system. Make sure no air is in the closed presurized coolant system, air in the system stops the water from moving around.Usually the fan clutch deteriates after the water pump went.It could also be that your oil pump is on the way out. Do you have good oil pressure via the pressure gauge? Are any "check engine" lights coming on? Good luck, Badgirl.check the coolant bottle for cracks etc. and also check the pressure capon the bottle. the cap can be no good and appear to be fine. best advice.....go buy a new pressure cap from the dealer and see what happens. i changed almost my whole cooling system before i did the bottle and cap.....nothing got it to run cool until i bought and installed them!!!I, too replaced thermostat, radiator cap, ect, even the cap on the coolant bottle. Finally, I had to replace the plastic bottle itself. Jeep dealer told me they are plastic, and therefore they warp with age.
The presence of the valves usually restrict the coolant flow into the heater core.
Heat will flow from the coolant to the air The coolant will absorb the heat from the building.
It might be clogged, thus not allowing enough flow It means that the excess coolant is going where it is supposed to. The coolant expands when hot and goes to the over flow reservoir.
the light is triggered by a switch inside the overflow bottle, If the coolant level is low when the engine is cold, it will trigger the switch to turn on the light until the cooant warms up and expands. The hot water expands and flows through the radiator cap and into the overflow bottle and shuts the light off. Then once the engine is shut off and cools down, the coolant will flow back into the engine again and empty the overflow bottle. so if the light is on, you need to fill the overflow bottle to the "cold" mark.