What could be causing my 09 Ford Fusion to leak excessive antifreeze run hot and heat not to work

Heat not working engine leaking antifreeze on the back side of engine on the driver side and car is running hot

My car has 168 miles.
My car has an automatic transmission.

Experienced mechanics share their insights in answering this question :
Hello. Thank you for writing in. The coolant leak is what is causing the engine to overheat. Without proper coolant flow, the engine is not able to transfer it heat away from itself. The hot coolant is also used in the heater core for use with the climate control. It is the lack of coolant that is causing the heater to malfunction. With that in mind, the engine can also be suffering other damages that will cost time and money down the line. If you are going to be driving the vehicle, carry coolant and always top off before driving or starting it. With that said, it is still not ok to drive the car excessively, and this is a repair that will want to be made as soon as possible. The coolant leak needs to be the focus of your attention. The vehicle most commonly leaks coolant from hoses, the water pump, freeze plugs, or physical engine damage. A visual inspection will likely show you the source of the coolant leak, then repair the damage.

How to Identify and Fix Common car Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced mechanics :

As a result of coolant leaking from the vehicle, your engine is overheating. A coolant leak can be caused by a variety of factors, including a cracked hose, leaking gasket, damaged water pump, or faulty radiators.
The most common reasons a Ford Fusion has a coolant leak are loose hose connections, a broken radiator, or a failed water pump. Search our network of RepairPal Certified shops near you to speak with a technician about your issue.
A coolant system leak, a broken radiator fan, a faulty water pump, or a clogged coolant hose can also cause your Ford Fusion`s coolant to become too hot. In any of these scenarios, the excess heat cannot escape your engine, which causes the entire cooling system to do the exact opposite of its intended purpose.
Corrosion within the radiator is one of the leading reasons that coolant leaks. As the tubes get older and weaker, you may get sediment or debris inside that causes a leak. The sealing gasket between the tank and the radiator can also wear out, and that could lead to a leak.
If coolant is leaking into the interior, your engine is in jeopardy. A low coolant level can cause your engine to overheat, which could lead to a big repair bill. Call your mechanic immediately and get the leak fixed.
While driving with a coolant leak doesn`t pose an immediate threat to your well-being, we highly recommend that you avoid doing so. Driving a car that is leaking coolant can cause serious damage to your engine. Your engine can overheat, costing you big time.
Driving your car when it`s overheating can cause serious – and sometimes permanent – damage to your engine, so it`s best to stop driving as soon as possible. Pull over and away from oncoming traffic, then turn off the engine. Open your hood (or call for help).
High coolant temperatures can lead to poor engine performance and premature component wear – resulting in engine damage or failure. High engine temperatures can quickly increase your engine oil temperatures and lead to poor lubrication. As the oil temperature rises, its viscosity decreases, making it thinner.
Antifreeze (aka coolant) is pumped through your vehicle`s engine as you drive, absorbing excess heat and exchanging it with the outside air. That means an antifreeze leak could cause the engine to overheat — and that can lead to major engine damage.
2. Coolant Odor. If you`ve noticed a sweet smell (like maple syrup) from the front of your vehicle or throughout the cabin, it could be due to a bad overflow reservoir tank. Typically, this indicates a coolant leak within the engine compartment and must be diagnosed soon.
Key signs to look out for:

Weak or no airflow. Cold air (not warm) coming through the vents when the heater is on. Coolant leakage visible inside the cabin or a damp smell.

The first thing you need to do is locate the source of the coolant leak. It might not be coming from the radiator. The best way to confirm the source of the leak is to wash the radiator and hoses with water, and then start the engine and look for new signs of coolant.
Pressure testing is used to check for leaks in the cooling system and to test the radiator cap.
If the coolant level is dropping and there is no external leak evident, then the coolant is probably leaking internally, into the engine. If the car has recently overheated then this could have caused the head gasket to fail.
Bar`s Leaks Liquid Aluminum Stop Leak

Bar`s Leak is well-known for its stop leak products, and among the best is its Liquid Aluminum Stop Leak. The compound making up the fluid works great at sealing leaks, and it also conditions the engine with the use of what Bar`s Leaks call Liquid Aluminum.

The average cost to fix a leaking radiator is $340, with a range between $125 and $600. Your total cost will depend on a number of factors, such as the type of repair needed, the type of radiator you have and the materials required.
How long can a car overheat before damage occurs? It only takes 30-60 seconds of overheating for permanent damage to infiltrate a vehicle. As soon as you notice signs of overheating, you need to act. Failure to do so might result in troubles like coolant leaks, damaged radiator caps, and a faulty cooling fan.
Continuing to drive an overheating vehicle can result in a head gasket failure, which can cost between $1,500 and $3,000.” Before checking the engine, wait for the vehicle to cool off.
No, you should use distilled water or better yet, de-ionized water. The reason for this is that tap water has minerals that can deform deposits inside the radiator and the cooling system passages of your engine. And over a long period of time they can lead to over-heating.
The main difference between coolant & antifreeze is their purpose. Coolant regulates overall engine temperature, while antifreeze is used to protect the coolant from the cold. Both mixtures are vital for keeping your car running correctly, so check radiator fluid levels and top them off when required.
A radiator cap looks simple but, is critical for a properly operating cooling system. A faulty radiator cap can result in engine overheating, loss of coolant or major engine damage. So, Pressurized cooling systems help prevent overheating and coolant loss.
The most common coolant leaks occur in the hoses that connect your engine to your radiator or heater core, or other small hoses running coolant to different equipment on your engine. The best way to stop these leaks is usually to replace the hose as they are inexpensive and easy to get to.
Start your car`s engine and allow it to idle. Look through the radiator filler neck to see if the coolant flows. At this time, it should not be flowing as your car has not reached the operating temperature to cause the thermostat to open. If you find the coolant is flowing, it means the thermostat valve is open.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

What could be causing my 09 Ford Fusion to leak excessive antifreeze run hot and heat not to work
ANSWER : Hello. Thank you for writing in. The coolant leak is what is causing the engine to overheat. Without proper coolant flow, the engine is not able to transfer it heat away from itself. The hot coolant is also used in the heater core for use with the climate control. It is the lack of coolant that is causing the heater to malfunction. With that in mind, the engine can also be suffering other damages that will cost time and money down the line. If you are going to be driving the vehicle, carry coolant and always top off before driving or starting it. With that said, it is still not ok to drive the car excessively, and this is a repair that will want to be made as soon as possible. The coolant leak needs to be the focus of your attention. The vehicle most commonly leaks coolant from hoses, the water pump, freeze plugs, or physical engine damage. A visual inspection will likely show you the source of the coolant leak, then repair the damage.

No heat, antifreeze leak, overheating engine
ANSWER : Hi…stop leak products should never be introduced into a car engine’s cooling system simply because such aftermarket products are not a factory authorized or factory sanctioned repair technique. Some factory service manuals are indeed emphatic on this issue. A stop leak product is, in essence, a foreign contaminant and thus has the potential to plug up cooling passageways, the radiator and so forth. The only recognized technique employed by professional mechanics when it comes to a leak in the cooling system is to repair the leak, period. At this point, by far the cheapest and most effective strategy for you will be to have a mechanic identify the leak(s) (via pressure testing, if need be, on a cold engine), repair the leak, and thoroughly flush the cooling system to hopefully remove all traces of the stop leak product. The cooling system has to then be refilled with new coolant, while purging all air, and tested. On a vehicle with over 200,000 miles, it is possible the leak occurred along with other cooling system faults such as a failing thermostat, water pump, and possibly partly clogged passageways, particularly in the radiator. All of that will have to be evaluated to ensure that no further overheating occurs. To get this resolved promptly and professionally, by all means please feel free to request a leak diagnostic and the responding certified mechanic will get you squared away. If you have additional concerns or questions, please do not hesitate to contact us.

A/C and heat are not working properly. Car blows heat in summer and cool air in winter.
ANSWER : Common causes of no cabin heat include malfunctioning blend door(s) (part of the in-dash ventilation network), a faulty or stuck heater control valve, a plugged heater core, stuck open engine cooling thermostat, collapsed hoses, and low coolant level. The cost to resolve the problem depends on which of the foregoing faults is the cause. If you desire a diagnostic to determine exactly why there is no cabin heat, please request a non functioning cabin heater diagnostic and the responding mechanic will come right to your location and get this resolved for you promptly.

With regard to your air conditioning system, if merely re-charging the system restored normal operation but the a/c ceased to function after a month or so, that scenario typically suggests a leak. Some leaks are really cheap to repair, like if a couple o-rings need to be replaced in system piping but if the leak is at the compressor shaft seal, that repair is more costly. It is not expensive to find the leak and diagnose the system and once the leak is found the mechanic can let you know of the exact cost to repair the leak and re-charge the system. If you desire that service please request an a/c system diagnostic – suspected refrigerant leak and the responding certified mechanic will get this taken care of for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you

My car is running hot, what could be the problem?
ANSWER : There could be an issue with the cylinder head gaskets. Antifreeze can break down and become acidic if not replaced as normal maintenance. The head gasket material erodes and can cause engine compression to build up in the coolant system. This will prevent the flow of coolant which can create an overheating condition.

There is a test that can be done to check whether there is carbon monoxide in the coolant system; it involves special equipment.

I recommend having your overheating condition inspected, and perhaps have a block test performed.

My 1998 Buick Park Avenue only runs hot when in traffic or just idling. What’s the cause of it running hot?
ANSWER : Either the cooling fans on the radiator are not working properly or the radiator is plugged up to where there is a restriction when the engine’s water pump is running at a slow speed. If you suspect that the radiator is plugged up, try running the engine at a higher rpm when stopped and the transmission in neutral. If the coolant temperature gauge drops, then the radiator needs flushed or replaced. If the engine tends to not cool down but rather overheat, then the cooling fans are not working.

Then you would need to check the cooling fan relay and see if its clicking on. If the relay is not clicking on but there is power to the relay, then the cooling fan relay needs replaced.

If the cooling fan relay is not clicking on and there is no power to the relay, then there is a break in the wiring from the fuse box to the relay or the cooling temperature switch has failed.

If the relay is working and clicking but there is no power to the cooling fans, then there is a break in the wiring from the relay to the butt connector. If there is power to the motors but the fans are not coming on, then the cooling fan motors need replaced.

If you need further assistance with your engine overheating at a stop, then seek out a professional, such as one from Your Mechanic, to help you.

Fuel EVAP line that runs under car is kinked how do I know if it is leaking? Also can I drive it like that if it’s not leaking?
ANSWER : Hi Ricardo. We answered your question earlier. However, if you didn’t receive the reply, here is what we stated earlier. In most cases, an EVAP leak will create an OBD-II trouble code. The best way to detect an EVAP leak is by having a professional mobile mechanic complete a check engine light inspection, they will be able to download the code and determine the source of the leak. That’s the best advice we can offer you. Thanks.

My car trys to run hot and it leaks anitfrez and my heat don’t blow out hot
ANSWER : You will need to identify where the coolant leak is. The water pump or heater core may be leaking causing the cooling system to get low on coolant causing the heater to stop working since no coolant is in heater core when you get low on coolant. Once coolant leak is identified and repaired then system filled you will get heat again. .

Heater not working reliably, is it caused by a bad thermostat?
ANSWER : From what you’ve described, it sounds like you have a stuck open thermostat. I’d recommend replacing the thermostat to see if this is the cause of the slow heat up of the vehicle since it’s a relatively quick repair. In an area like that it sounds like you’ll will need the heat in the winter very badly and as soon as possible. I would also recommend getting a coolant flush as it may help clear any possible blockage in the heater core. To avoid any unnecessary repairs, consider YourMechanic, as one of our mobile technicians can come to your home or office to diagnose your heating issue and make the necessary repairs.