Bleed Radiator Cap Off

Add coolant to reservoir if needed to half full level.

Bleed radiator cap off.

Rev up the engine again and loosen the air bleeding valves until there is only flowing coolant from them. Add coolant to reservoir if needed. This will allow you to handle the radiators without burning yourself. Keep the radiator cap loose to help the air move out during this process.

Add coolant to the reservoir container to bring the level up to the cold mark as well. Open the valve and bleed the air trapped in the upper portion of the radiator. So i began to experience my car passing the red line for the thermostat gauge in my 1999 jeep grand cherokee laredo. Place cold hot control on hot.

With engine cold fill radiator if needed. Have refilled the radiator with air removal via the air bleed valve have replaced the thermostat and the radiator cap but the unusual problem remains that engine temp takes a long time to get to the mid normal then at highway speeds the temp actually begins to drop towards the quarter mark. Mix only distilled water with the antifreeze. Another easy way to bleed the car s radiator is simply to allow it to idle with the radiator cap removed this is also a great option if your car doesn t come equipped with a special bleeder valve remove the radiator cap then allow your car to run for about fifteen to twenty minutes.

Good thing there s a quick fix. Adjust reservoir coolant level as needed and replace cap. Leave the radiator cap off and start the engine. Start the car with the radiator cap off.

Now while there are a few issues on why. You can also jack your car to bleed the air from the cooling system. One of the easiest ways to bleed your car s radiator is to simply remove the radiator cap and then start your engine. Leave cap off of reservoir.

Fill the radiator with a 1 1 ratio mixture of distilled water and antifreeze up to the bottom of the radiator neck. Bleed a radiator your heat is cranked up but one of your radiators is still ice cold. Start engine and let it idle. This puts your radiator higher than the rest of the cooling system and helps force the air pockets closed.

When bubbles disappear from reservoir turn off vehicle. Let your engine idle again and recheck the coolant level and lower the front of your car. Put your radiator cap back. Set the heater to max.

At this point you should repeat these steps until you get heat inside the car and your coolant temperature reaches 90c. Remove the radiator cap.