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Radiators

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How to Replace a Car Radiator
Car radiators remove heat from coolant after it's cycled through the car engine. Cars overheat and damage is caused without a functioning radiator.
How to Repair a Leaking Car Radiator
The radiator is the start of your car’s cooling system. Coolant from the engine travels through tubes in the radiator. These tubes are surrounded by fins designed to direct airflow. The air...
Symptoms of a Bad or Failing Oil Cooler
Common signs include oil or coolant leaking from the oil cooler, oil getting in the cooling system, and coolant getting in the oil.
Symptoms of a Bad or Failing Radiator Drain Cock
Common signs include leaking coolant, especially around the radiator drain cock, and threads stripping on the drain cock.
Symptoms of a Bad or Failing Radiator
Common signs include leaking coolant, vehicle overheating, sludge, and low coolant.
Symptoms of a Bad or Failing Stay Rod
Common signs your classic car has a failing stay rod include rattling noises from the front and a radiator that looks tilted or about to fall.
Is it Safe to Drive With a Cracked Radiator?
The radiator in your vehicle is used for cooling the internal combustion of the engine. Coolant is passed through the engine block, the heat is absorbed, and then fed into the radiator....
How Long Does a Radiator Drain Cock Last?
Your car’s coolant system is one of the most critical on the entire vehicle. Without it, the engine would quickly overheat, causing devastating damage. Coolant is cycled from the radiator, through...
How to Buy a Good Quality Cooling System Flush
Your radiator does the important job of helping to keep the engine cool. Overheating can cause serious, expensive damage like a blown head gasket (which typically requires complete engine replacement) or...
How to Add Radiator Fluid
The radiator is at the heart of your car’s cooling system. This system directs radiator fluid or coolant around the engine’s cylinder heads and valves to absorb their heat...
How Long Does a Radiator Last?
Your car’s coolant system is vital to ensure that the engine stays within operating temperature limits and does not overheat. It’s comprised of several different components. The radiator is the largest, but there...
How Long Does a Stay Rod Last?
In order to operate safely, your car’s engine needs coolant and a way to disperse the heat the coolant absorbs. That’s where the radiator comes in. It’s a crucial component of your...
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 Change a Radiator Valve
A radiator valve allows coolant into the radiator in order to cool off the engine once the coolant has reached a certain temperature.
How to Replace a Cooling Fan Relay on Most Vehicles
Cooling fan relays fail when the radiator cooling fan no longer receives an electrical signal. A broken fan relay means the radiator cannot cool down.
How to Pressure Test a Radiator Cap
Radiator caps are pressure tested using a cooling system pressure tester. This shows if the pressure in the cooling system is at a healthy level.
How to Replace a Radiator Fan Motor on Most Cars
The fan motor on the radiator fails when the engine overheats and the fan does not activate. This means that the coolant cannot cool the engine well.
How to Replace a Radiator Drain Cock
The radiator drain plug goes bad when the oil pressure is lower than normal, there is leaking coolant, or the Check Engine Light is on.
How to Buy a Good Quality Cooling/Radiator Fan Motor
Fans are necessary to keep the components under your car’s hood from overheating. Excessive heat can cause warping, melting, and other damage, not to mention the additional energy suck. The radiator...

Related questions

Question
My radiator fan broke from hitting the shroud.
Hello Jennifer. One way you may be able to tell if the new fan is going to work will be to figure out why the old fan was being interfered with. Was anything about the shroud or the original fan...
Question
Cracked Radiator
If your radiator has leaked out all the coolant from the trailer ball then you not only have a bad radiator but a bad a/c condenser since the condenser for the a/c is in front of the radiator. It would...
Question
Water Pump
If the overheating problem was not resolved with the new radiator and thermostat then it is not safe to drive the car simply because overheating will damage the engine. If, however, the overheating problem was resolved with the installation of...
Question
Overheating
There are only a few places the coolant is able to go in your cooling system. If your water pump is pumping the coolant and the thermostat is opening and closing properly, this only leaves the radiator itself that may...
Question
Radiator leak
It is not recommended to drive the vehicle with a major coolant leak. You should have the cooling system pressure tested by a mechanic like one from YourMechanic that can come to you and test and find the coolant leak...
Question
Engine Hot A/C turned off message
Overheating can occur if the radiator is partially clogged or if there is a fault with the water pump and/or drive belt. There are other causes of overheating as well. If you schedule an engine overheating diagnostic with a certified...
Question
Previous work from YOURMECHANIC
Sent to CS for question on the vehicle serviced by a Your Mechanic Technician. Look to see if the coolant hose clamps are loose or if the radiator cap has a worn out seal. This will cause coolant to leak...
Question
Why are the fans staying on when the car is off to where I have to pull the fuse?
The fans are controlled by a relay as well as a temperature switch and possibly timer(s). The relay may be stuck in the closed position and that would be the first and easiest component to test. If a relay tests...
Question
How long does it take to replace the lower radiator hose on this car? Do you think that $360 is an appropriate amount for the labor to replace this hose?
Sent to CS. Hi there. Replacing a lower radiator hose on your vehicle can take up to 50 minutes at a shop. Most shops will charge for replacing the hose and filling the radiator as 2 separate service times. This...
Question
Exactly where is my thermostat located?
If you follow the lower radiator hose up toward the engine, that lower hose terminates at the thermostat housing. The housing itself is attached to the engine with three relatively small bolts. If you remove those three bolts and the...
Question
Replace Radiator - do I need to purge/recharge the AC system?
Hello. When replacing the radiator, you do have to mess with the condenser a little bit, but you do not need to disconnect it or remove it. The first step when it comes to the condenser is to remove the...
Question
What can be causing my van to leak coolant?
Hi there. Check the coolant hoses and see if any hose are loose. If they are loose, then they will need tightened up. Check the coolant reservoir and see if it has a crack or loose hose to it. If...
Question
Overheating
The excessive pressure causing the hoses to blow off suggests that your cooling system is not flowing properly and that there is a back up of some kind somewhere in the system. This is generally caused by a faulty thermostat...
Question
Car keeps overheating
This can be caused by a number of things such as low coolant levels, a faulty thermostat, a clogged radiator or a failing coolant fan switch. As you may know the coolant fan switch helps to maintain the proper coolant...
Question
Coolant leak & light came on, dealer suggesting will need radiator replacement
It's very possible that they are correct. The radiators on the Jetta are made of plastic and very thin aluminum and they are very delicate. It's very possible that a piece of road debris could be kicked up with enough...
Question
Running hot.
Hello, the reason your vehicle is operating hot is the coolant removes the heat from the engine, that heat is than released by the radiator. The leak will cause the coolant level to go down and not able to absorbed...
Question
Radiator is leaking - 2006 Volkswagen Jetta
This is definitely a sign of a leak in your coolant system. There are many different places the coolant may be leaking from. There are various hoses that circulate the coolant through the radiator and motor and these are common...
Question
Is it possible to crack an engine block by flushing the radiator?
Hi there: Is it possible - certainly. If the engine block is hot and the coolant being flushed is cold, it's actually rather simple for small cracks to develop inside the water passageways. It really depends on the condition of...
Question
Hoses Collaped
When the cooling system heats up the coolant expands and the coolant excess pressure is released out the radiator cap into the overflow reservoir. When you shut off the engine the engine will start to cool off and the coolant...
Question
Radiator issues
This issue may be due to a faulty coolant fan relay. As you may know, the coolant fan switch helps to maintain the proper coolant temperature by turning on and off at specific temperature thresholds. When this switch is not...

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