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coolant

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How to Check the 5 Essential Fluids in Your Car
Checking your oil and adding engine coolant, brake fluid, power steering fluid, and windshield washer fluid are essential for maintaining your car.
The Best Tool to Eliminate Air Bubbles
Air bubbles can form while mechanics perform service on coolant systems. A vacuum coolant filler helps eliminate this problem to avoid serious damage.
The Best Tool to Find Coolant Leaks
Diagnosing a car issue can be a tricky without proper tools. A coolant pressure tester is useful for diagnosing overheating issues and coolant leaks.
How To Keep Your Car From Overheating
Monitoring your coolant level, turning the A/C off in very hot weather, and regular inspections will help you avoid having an overheating car.
How to Replace a Coolant Reservoir
A coolant reservoir is at fault if coolant is leaking underneath the vehicle or if the coolant sensor remains on all the time.
5 Commonly Overlooked Vehicle Maintenance Items
Brake fluid, auto transmission fluid, and coolant flushes, as well as cabin filter changes and valve adjustments, are all important services.
The Best Tool to Reach Hose Clamps
Hose clamps are present in most cars, but can be hard to reach. Remote access hose clamp pliers solve this common issue for automotive technicians.
How to Replace a Cylinder Head Coolant Temperature Sensor
Signs of coolant temperature sensor failures include sluggish acceleration, hard starting, and a Check Engine or Service Engine Soon Light.
What Does the Coolant Temperature Warning Light Mean?
The coolant temperature warning light turns on when your engine is sensed to be too hot and is at risk of damage from overheating.
How to Replace a Radiator Hose
The radiator hose is an important part of your vehicle’s cooling system. The hose carries the coolant to the radiator, where the fluid is cooled, then back to the engine...
How to Use Engine Block Sealer to Repair a Head Gasket Leak
Head gasket leaks occur when engines overheat and can be costly to repair. Engine block sealer can be a quick and easy alternative for minor cases.
How to Calculate the Concentration of Coolant in a Car
A car cooling system works to transfer heat from the engine. Check antifreeze level and condition, and mix coolant with water to prevent overheating.
How to Replace a Coolant Level Sensor
Coolant level sensors are faulty if the coolant level sensor light stays on extensively or the engine overheats without the light coming on.
How to Replace a Coolant Temperature Sensor
The coolant temperature sensor switch is not working if the engine emits black smoke. The switch may have failed if the car gets poor fuel economy.
How to Replace a Car Surge Tank Hose
Replacing a surge tank hose involves working on the coolant system, which can burn you when the engine is hot. Stay safe by waiting for it to cool.
How to Remove and Replace a Heater Control Valve
The heater valve is integral to a vehicle’s cooling system. Replacing one requires a new valve, some basic tools, and fresh coolant.
How to Replace a Coolant Tube
The bypass hose in the coolant system may have failed when the coolant level is low and there is a visible leak underneath the vehicle.
How to Replace a Coolant Vacuum Valve Switch
A vacuum line attaches to the vacuum switch in your car as part of the engine’s heating and cooling system. A faulty switch can break your heater.
How to Find the Source of a Coolant Leak Faster and More Accurately
Keeping a good coolant level in your car is necessary to avoid overheating. If you think there is a leak, find where it's coming from to fix it.
How to Top Off Car Coolant
Coolant, also known as anti-freeze, needs to be kept at a certain level to prevent car engines overheating and damaging the engine.

Related questions

Question
Where is my coolant going? My car keeps overheating and blowing cold air. The temperature rises when stopped and drops when accelerating.
Look everywhere around the engine and see if there is a split hose or loose hose clamp. If the hoses and clamps are in good shape and tight, then check the core plugs (freeze plugs) and see if there is...
Question
Can a bad water pump . make the water drain from the radiator into my exhaust? 1995 Ford Explorer
Hello - no, a bad water pump will not pump water into your exhaust - at least not directly. A bad water pump can easily cause overheating, which unfortunately can cause a blown head gasket, or cracked cylinder head or...
Question
White smoke coming from engine after car is turned off
Hello, thank you for writing in. The symptoms you are having are classic of a failed head gasket. While it can be expensive and time consuming to check the condition of the new head gasket, it is very possible it...
Question
When I start my car, the fan jumps on very loud for about a minute to a minute and a half. What would be the reason?
There could be an electrical wiring issue with the cooling fan from the cooling fan to the cooling switch / sensor or the thermostat could be sticking on causing the fans to blow harder as the engine may overheat until...
Question
Temperature gauge moves up and down rapidly (does'nt jump).
The wire yl/lb from the PCM to the coolant temperature sensor seems to have a break in it. However, when jumping the wire from the PCM to the sensor could have been in contact with another circuit causing the gauge...
Question
Hi, I have a 2003 pontiac sunfire that is getting water in my engine. It looks like water is leaking from somewhere between my eng
Engine coolant can leak externally through a hose, radiator, water pump, etc. or internally due to a leaking head gasket and sometimes a leaking intake manifold gasket depending on the engine design. External leaks are typically found by simple pressure...
Question
Car will overheat if I don't have the fan on. When fan is off it doesn't come on to release heat from engine. So the fan is always on.
Check the wiring to the coolant temperature sensor and see if there is power to the sensor switch. If there is no power, then check the cooling fan relay and see if its clicking on. If there is no clicking...
Question
Car Overheating; Unknown cause
The coolant could be low, the thermostat could be plugged up or sticking, the radiator could be plugged up restricting the coolant flow, the water pump could have failed, or the head gasket could have burned causing the engine to...
Question
My car overheats
Hello, thank you for writing in. The cooling system does not always rely on the overflow reservoir that you can see into. Most of the coolant is stored in the radiator when it is off. This is also known as...
Question
Coolant reservoir dash light.
The reservoir could have a crack in it or the hoses to the reservoir could have the clamps loose or the hose could be split causing the coolant leak. If there is a coolant leak, then the coolant pressure will...
Question
My BMW 335i n54 coolant line hose o ring needed to replaced. I think coolant is leaking from there.
The best thing to do is get a coolant pressure test and hook it up to your radiator or reservoir and pressurize the system to 15 psi. If there is a leak, it will appear under a pressure. If you...
Question
Bmw 325xi 2004. There is no heat and the car overheats.
Hi there. For your vehicle to overheat and not have any heater heat in the cab, then the coolant could be low, the water pump could be not working, the radiator could be plugged up, or the thermostat could be...
Question
is it ok to use red coolant in my motorcycle?
Hi there. The red coolant (orange antifreeze) has a different type of corrosion inhibitor that has a much longer service life than the green ethylene glycol coolant. It is okay to change the system over, but do not mix the...
Question
Check engine light on, engine knocking, loss of power, and coolant leaking.
Hi there. Grab a flashlight and look under the vehicle for where the coolant leak is coming from. Either there is a gasket, hose, or freeze plug that is leaking causing the coolant to leak or the engine has cracked....
Question
I have a 1999 saturn. It burns oil fast and has a lot of white smoke from my exhaust. It shakes mainly in idle. What's wrong?
Hi there. White smoke coming out of the exhaust is an indication that the cylinder head gasket is burned or the cylinder head is cracked. When coolant is in the combustion chamber, then engine will shake, the oil will burn...
Question
Engine Overheating after 20-30 minutes. Why?
Hi there. One of the easiest ways to test a water pump is to carefully place your hand on the lower radiator hose while the motor is running. Two things should happen; first, as you suggested, the hose should feel...
Question
engine overheating.
Hi there. When an engine is overheating your would need to check the coolant to see if its low or not the correct temperature rating. If the coolant is good and rated to the maximum temperature, then the radiator could...
Question
How much does it cost to repair my antifreeze leak
Anytime you see a coolant leak under the vehicle you know you have a leak but the location is not known. You will need to have the cooling system pressure tested to see where the leak is coming from. It...
Question
Oil leaked out, van ran hot and radiator had a leak oil was splattered everywhere and backed up into the coolant jug 2002 Ford E350 Super Duty
Hello, thank you for writing in. The first issue that comes to mind is a blown head gasket. This would allow the coolant and the oil to mix, but less often results in an exterior leak. This means the head...
Question
I got antifreeze leaking out the side of my engine but can't see where it's coming from
Hello, thank you for writing in. The leak if that severe is likely going to be easy to spot if you can watch it while it is leaking. You can use water for this kind of observation. Refill the engine...

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