Why is my car overheating after replacing the radiator?

Overheating. Just replaced radiator and thermostat, but still hasn’t fixed the problem. My car overheated the other day, and it was leaking coolant horribly. I got a new radiator, which stopped the leaking, but the car was still overheating so then we tried replacing the thermostat but it is overheating even now.

What causes a radiator to stop dissipating heat?

This can happen if the reinforcing spring inside the hose is missing or damaged. The most common problems radiators fall prey to are clogging (both internal and external) and leaks. Dirt, bugs and debris can block air flow through the core; and reduce the radiator’s ability to dissipate heat.

Is the water pump still hot after replacing the radiator?

I have replaced the radiator, water pump, it still run hot. I took out the thermostat and it still run hot when you drive it any distance. The temperature gauge return to normal when it is setting still and running. Help I’m at a lost to the problem. 71 people found this helpful. Did you ever find the cause of this?

What should you do if your car engine is overheating?

If the thermostat fails to open; it will effectively block the flow of coolant and the engine will overheat. Severe overheating can often damage a good thermostat. If the engine has overheated replace the thermostat. The hose should not feel uncomfortably hot, until the engine has warmed-up and the thermostat opens.

Will a bad radiator cap cause overheating?

If you’re wondering whether a bad radiator cap can cause overheating, the answer is a definite yes. Air pockets in the cooling system from an ineffective seal (such as one in a bad radiator cap) or a lack of sufficient pressure can cause the engine to overheat.

What are the symptoms of a cracked radiator?

Coolant puddle: One sign of a cracked radiator is leaking coolant. The coolant fluid is red or green in color, so if you see a puddle of this under your vehicle, contact a mechanic as soon as possible.

What is a bad radiator?

A vehicle’s radiator helps to keep the engine from overheating. It contains a mixture of water and coolant, and if it is cracked, your car can break down. A bad radiator can also lead to engine damage. Several things can cause a cracked radiator. Rust can destroy the metal in the radiator, causing a crack.

Why is coolant overheating?

Coolant Leaking – One of the main causes of car overheating is when the coolant is leaking from the hoses of the cooling system. These hoses are responsible for transferring the coolant fluid from the cooling system to the engine.

Why is my thermostat stuck on the wrong temperature?

It can be stuck shut, it can be stuck open, it can be partially open, it could be opening at the wrong temperature and it could just come apart and be broken. If you are overheating always check your thermostat, as it is one of the top causes of overheating.

Why is my new water pump still overheating?

Replaced water pump, radiator and thermostat car is still… Q: Replaced water pump, radiator and thermostat car is still overheating. What can it be? Changed water pump, radiator and thermostat. Car still overheating it has a leak in the headers and i am getting that replaced too.

Why is my water pump and radiator still overheating?

Changed water pump, radiator and thermostat. Car still overheating it has a leak in the headers and i am getting that replaced too. Can that be why it is still overheating? My car has 170000 miles. My car has an automatic transmission. I’m sorry to hear about your overheating issues.

What causes a car to overheat with a new thermostat?

A leaky head gasket or a cracked cylinder head are normally due to expansion and contraction of engine materials along with high pressures caused by excessive overheating. The Integrity of the system cooling system is compromised if there is a leaky head gasket or cracked cylinder head.

Why is my water pump and thermostat not working?

The radiator, water pump, and thermostat are definite possibilities, but there are a few others that are possible also. A faulty cooling fan is the first thing that comes to mind, but it could also be a head gasket issue, clogged coolant passages inside the engine, or faulty radiator hoses.

Can a faulty coolant sensor cause a car to overheat?

A faulty engine temperature sensor can cause your vehicle to overheat by sending a permanent called or a permanent hot signal. Common symptoms of a faulty coolant temperature sensor are: The catalytic converter is an exhaust emission control device located in your exhaust pipe before the muffler.

What to do if your Acura radiator overheats?

The first thing you will want to do is verify that all the air has been removed from the cooling system from the Acura’s radiator repair. If there is no air in the system and the vehicle is still overheating, it is possible that your car may have problems with the water pump or with the thermostat.

Can a thermostat cause an engine to overheat?

A thermostat can cause engine overheating in many ways. It can be stuck shut, it can be stuck open, it can be partially open, it could be opening at the wrong temperature and it could just come apart and be broken. If you are overheating always check your thermostat, as it is one of the top causes of overheating.

What to do if your truck engine is overheating?

A Truck fan shroud helps funnel the air through the radiator and thus helps cool your engine. If your fan shroud breaks or cracks get it replaced as soon as possible to avoid overheating. Removing your fan shroud will cause engine overheating.

What to do if your car’s radiator is overheating?

If the engine has overheated replace the thermostat. The hose should not feel uncomfortably hot, until the engine has warmed-up and the thermostat opens. If the hose does not get hot, it means the thermostat is not opening.

Can a defective radiator cap cause engine to overheat?

A defective radiator cap will cause engine overheating in a number of ways. Three of the ways a radiator cap can cause overheating are, 1) Not holding in pressure and allowing the coolant to vent out or escape the cooling system. 2) No providing the proper pressure and not raising the boiling point.

What does it mean when your radiator does not get hot?

The hose should not feel uncomfortably hot, until the engine has warmed-up and the thermostat opens. If the hose does not get hot, it means the thermostat is not opening.

What causes a cold radiator hose to overheat?

You may finally be forced to purchase a new radiator after performing this leak repairs. A cold lower radiator hose will cause an overheating problem. The cause of this varies with the main culprits being a leaked hose radiator pipe, a faulty thermostat or hindered coolant circulation.

When to close the radiator thermostat when not running?

The thermostat should be closed when the engine is cold and not running. Regulation of water by the thermostat prevents engine hot spots. Once the optimal temperature has been reached, the coolant water will be let into the radiator for energy dissipation.

Is the thermostat on my new car overheating?

I got a new radiator, which stopped the leaking, but the car was still overheating so then we tried replacing the thermostat but it is overheating even now. I spent my entire check on getting those things fixed, what now? I just got paid again but don’t have much to spare towards getting it fixed, so I need to make it count.

Is there a hole in the radiator crossover?

If you peer into the radiator the upper holes you see in the crossover passages may be clear but the clogged ones are often down low; out of sight where you can’t see them. The hole in the thermostat is unnecessary but I wouldn’t worry about it at this point.

Can a defective thermostat cause an engine to lose coolant?

Unless the catalyst has been destroyed by neglecting other problems (and then you have another expensive problem) the high temperatures within the catalyst vaporize everything. Defective thermostats cannot cause an engine to lose coolant. When they fail, they generally fail in safe mode, that is, they stay open.

What to do if your car has no heat?

Q: No heat. Replaced coolant and replaced thermostat. Car is still overheating and has no heat. Only cold air comes out. New thermostat and no coolant in the radiator and reserve. Car still overheats and no heat. Only cold air comes out. My car has 105000 miles. My car has an automatic transmission.

What happens when the thermostat on a car fails to open?

Finally, the thermostat must be doing its job to keep the engine’s average temperature within the normal range. If the thermostat fails to open; it will effectively block the flow of coolant and the engine will overheat. Severe overheating can often damage a good thermostat. If the engine has overheated replace the thermostat.

Where is the coolant in the radiator when there is no leak?

There’s a COLD/MIN label on the tank indicating the ideal antifreeze level when the engine is cold. The coolant in the radiator should be just below the filler neck. When you are losing coolant but no leak is visible, several parts could be the guilty party.

Why does my car overheat when the water pump is not working?

A water pump that is not working properly can lead to overheating because the hot coolant is not being pumped out of the engine and replaced with the cooler fluid that is exiting the radiator.

What should I do if coolant is coming out of my radiator?

The radiator cap can deteriorate over time, letting antifreeze slip through when you are driving. A clogged radiator system could be a problem too as it blocks the flow of the liquid. Check the radiator when the coolant disappears without any trace. Replace the worn out radiator cap. Engine overheating and coolant are closely related to each other.

Can a low coolant level cause an engine to overheat?

Low Coolant level. A low coolant level will in most cases cause an overheating engine. However, if the coolant has gone low, you do most likely have an internal or external coolant leak on your engine.

Why is there no air coming out of my radiator?

If theres no air or water coming out, this may be due to the type of system or there are further problems. You may need to call a plumber to solve this radiator problems. How can I balance my radiator system Balanced radiator problems.

What to do if your radiator fan is not working?

Start simple and make sure the fuse if good. If the fuse is ok you will need to check any sensors you have and then maybe your fan motor is bad or there is a wire short. In any case you must have your system checked when your electric fan is not working. A bad water pump can be hard to diagnose.

What to do if your Radiator is low on coolant?

A low coolant level is one of the easiest cooling system problems to find. You only have to visually check your reservoir coolant level or radiator, to see if your cooling system is low on coolant. You then just need to top it off to the proper level.

What happens if a radiator hose collapses on a car?

A collapsing radiator hose will prevent coolant from moving through your cooling system and will quickly cause engine overheating. A spring or coil is added inside some hoses to prevent the hose from collapsing and shutting off the coolant flow. Check all your hoses and make sure none are collapsed or sucked shut.

What to do if your car overheats on the highway?

There are no leaks of any kind. Replaced the thermostat, flushed the radiator, refilled it with the proper coolant, burped system. Next day I drove to work without issue. Approx 25 minute drive, mostly highway. Drove home and car overheated right as I got to the driveway. Checked the fans, and hoses and all appear fine, fans work as intended.

How can I tell if my car engine is overheating?

Another way to check the water pump is, as the engine is running and when it gets hot, grab the lower radiator hose and squeeze it. You should feel the water moving in the hose. If the coolant is moving and the water pump seems to be working, then the thermostat could be sticking and not flowing properly.

Why does the radiator leak when the bearing goes out?

It starts leaking when the bearing is going out so that it will be replaced prior to a complete failure. As for the vehicle still overheating, if all of the parts you have replaced are working fine, then you may have an air flow issue through the radiator. If this was the case, the vehicle would still cool at higher speeds and just not around town.

What causes a radiator to become clogged with coolant?

Internal corrosion and an accumulation of deposits can likewise inhibit coolant circulation and reduce cooling. A good way to find clogs is to use an infrared thermometer to; “scan” the surface of the radiator.

Can a cracked radiator cause an engine to overheat?

Keep your coolant fresh: To keep your radiator in good working condition, change the coolant on a regular basis. If you do not change your coolant enough, the radiator can start to corrode and crack over time. This can cause the radiator to leak and the engine to overheat.

What should I do if my radiator cracks?

You should have your coolant system checked before you continue to drive. Replace your radiator: If your radiator is cracked, it may need to be replaced depending on the severity of the damage. A mechanic will be able to let you know how bad the crack is, and whether they will be able to repair it or if the entire radiator will need to be replaced.

What causes a car’s cooling system to overheat?

A collapsing radiator hose is usually caused by vacuum and is a sign of cooling system blockage or a bad radiator cap. A collapsing radiator hose will prevent coolant from moving through your cooling system and will quickly cause engine overheating.

What causes the radiator on a car to collapse?

You should not drive your vehicle if you have a transmission oil leak, an engine oil leak, or any oil mixed with your coolant. A collapsing radiator hose is usually caused by vacuum and is a sign of cooling system blockage or a bad radiator cap.

Why is my Isuzu truck overheating after replacing the thermostat?

This will cause the flow of the coolant in the system to be restricted, causing the truck to overheat. A clog in the heater core could also cause this problem. However, if the car is still getting heat, the heater core can easily be ruled out. The most likely cause is a clogged radiator.

Why is my car still getting heat from the heater core?

However, if the car is still getting heat, the heater core can easily be ruled out. The most likely cause is a clogged radiator. I would recommend that you have a certified technician complete a system check in order to pinpoint your overheating problem.

Where is the thermostat on a car that is overheating?

Your vehicle’s thermostat opens and closes as needed to keep your engine at the right temperature. If it’s stuck open or closed, your engine will overheat, which is a significant problem. The thermostat is usually located in a plastic house somewhere on your engine block or head, check your repair manual to find its location.

Can a faulty coolant sensor cause an overheating car?

A coolant temperature sensor may not cause an overheating engine by itself, but if your car has an electric thermostat or water pump, it may trick them to not work properly. A faulty coolant temperature sensor may also trick you by thinking that your car is overheating but it’s actually not in reality.

What causes a car to overheat with no coolant?

A loose belt is not able to rotate the water pump pulley and can lead to engine overheating. The water pump moves the coolant through the cooling system. Check engine oil color and level. Remove the dipstick and note the color of the engine oil.

What causes a car to overheat in the garage?

Some of those possible overheating causes apply to both situations and these are among the easiest repairs you can tackle in your own garage. By a large margin, the most common cause for engine overheating is simply a low coolant level. Your engine’s cooling system relies on coolant to circulate and remove heat from the engine.

What should I do if my car overheats?

I recently replaced the head gasket, flushed the coolant and checked for blocked cores, and replaced the thermostat. Unfortunately, my car (2003 Mitsu. Eclipse 4 cyl) still overheats, though not as much. Last night i took the thermostat out and drilled a TINY hole in the housing to allow for the passage of more coolant. It still overheats.

https://www.youtube.com/watch?v=81GzolKQ0Yw

A water pump that is not working properly can lead to overheating because the hot coolant is not being pumped out of the engine and replaced with the cooler fluid that is exiting the radiator.

How to tell if your car is overheating with the AC on?

Symptoms are similar. Temperature is within the two “dots” when the car is still with the AC on. However once I run the car at 80 – 90 km/h for more than 30 minutes with the AC on, the temperature gauge moves upward – almost to the red line if I don’t turn off the AC.

Can a failed radiator fan cause a car to overheat?

The most common symptom of a failed radiator fan is that the car is overheating on idle or at lower speeds because at higher speeds the car doesn’t need the use of the radiator fan. You should check if the radiator fan is spinning on full power when the thermostat is fully opened and the car engine is hot or while it’s overheating.

How to know if your car engine is overheating?

En it gets hot, check radiator with engine off for cold spots it should be same temp all over you can use your hand if fans are disconnected. It also may be a water pump problem. Running without a thermostat will allow engine to not go into closed loop so fuel mileage will be a lot lower. helpful?

What to do if your Radiator is overheating?

Not more than 1/2″ give when pushed with a finger. (2) a new radiator cap. The cooling system is supposed to be under pressure and caps do age out occasionally. (3) put the thermostat in a pan of water and heat the pan past the temperature the thermostat is supposed to open at. See if it opens.

Which is a symptom of a bad thermostat?

A symptom of a bad thermostat is an engine that overheats at highway speeds. It may never overheat at lower speeds because it is not working as hard as it does at higher speeds. A closed thermostat will not allow enough coolant to reach the engine to cool it.

How to change coolant without causing engine to overheat?

Check your car owner’s manual or vehicle repair manual. The purge valve will expel any air that gets into the system after adding the new coolant. This will prevent the formation of air bubbles or hot pockets inside the engine that cause overheating. Another way to purge air from the system is to use what I call the jack stand method.

When to change the coolant in a radiator?

Changing the radiator and reservoir coolant within a few days of difference will help replace most of the fluid in the system. Follow the procedure to purge air from the system as well. See section II. Refilling the Cooling System. 8. After removing the drain plugs, wait for the coolant to drain completely.

When to put antifreeze on your car engine?

Soon after, corrosion begins to destroy your water pump, radiator, and surfaces throughout the engine. That’s why car manufacturers suggest a two- or four-year service interval or more, depending on your particular vehicle make and model and the type of antifreeze your vehicle needs.

Can a hot radiator cause an engine to burst?

If the coolant gets hot enough to boil, it may cause old hoses or an age-weakened radiator to burst. Pistons may swell up and scuff or seize in their bores, causing serious engine damage. Exhaust valve stems may stick or scuff in their guides.

Why is my car still overheating after replacing the water pump?

As for the vehicle still overheating, if all of the parts you have replaced are working fine, then you may have an air flow issue through the radiator. If this was the case, the vehicle would still cool at higher speeds and just not around town.

What to do if your car overheats after replacing water pump?

The engine doesn’t overheat and it seems like fluid is coming out of the radiator c If coolant has to be added more than once per year, there is a leak. To find the leak that exists in your case, and get the required repair estimated, please request an engine cooling system leak diagnostic and the…

Will a bad thermostat make your car overheat?

Because your thermostat controls temperature of fluids from the radiator hose, a bad thermostat will cause your car to overheat. When the engine temperature has reached the operating level, it should allow coolant to flow to the engine and regulate the heat.

How long does it take to change a thermostat in your car?

The time required varies by vehicle year, make, and model. The required time could range from 1/2 hour to literally hours in some unusual designs. For your particular year, make and model, that is a 2002 Protege, it requires about 1 hour to remove and replace the thermostat.

What to do when your car overheats?

There are several ways to combat overheating in your vehicle. Have the cooling system flushed at the manufacturer’s recommended interval or when it is dirty. Have a technician repair coolant leaks as soon as they appear. Get your engine oil changed regularly.

How does a car act with a bad thermostat?

A bad thermostat can cause the car to swelter , as the thermostat is a heat-sensitive control device situated at the radiator hose. When the temperature of the engine reaches its normal operating temperature, this device should open to allow coolant to flow into the engine to regulate the heat.

What to do when your car is overheating?

Usually when car is starting to overheat it is also a good idea to either stop and let car cool down about 30 mins and what works for me is to BLAST the heater until it goes down or stays down until I get to my destination. It can be horrible and sweaty if you stay in a hott area, but I have done it even in Phoenix and now in Socal.

What are the signs of a bad radiator on a car?

Engine Overheating – The most obvious symptom of a bad radiator is going to be an overheated engine. Since its job is to keep the engine cool by circulating the coolant, a bad radiator will fail to do this.

Can you drive a car with a bad radiator?

A cracked radiator can be dangerous to drive with because the engine may overheat. A cracked radiator does not allow the proper amount of coolant to reach the engine, which causes the overheating. Contact the professionals at YourMechanic to make the correct diagnosis and to repair the radiator properly.

Can a clogged radiator cause a car to overheat?

A clogged radiator can cause your engine to overheat even if you have enough coolant in the system because the coolant won’t be able to circulate properly through the clogged radiator and cool down. The car radiator is a pretty simple part of the cooling system.

What are the causes of my car overheating?

10 COMMON REASONS FOR OVERHEATING CAR PROBLEMS TOO LOW OR TOO HIGH LEVEL OF ENGINE COOLANT. This is the most common reason for overheating. COOLANT HOSE LEAKS. Another very common mishap that causes engine overheating. LOOSE HOSE CLAMPS. BROKEN THERMOSTAT. THERMAL SWITCH ON THE RADIATOR. BROKEN WATER PUMP. CLOGGED OR CRACKED CAR RADIATOR. CLOG IN THE COOLANT SYSTEM. CRACKED OR DAMAGED HEATER CORE.

What should the temperature of a car radiator be?

Your car radiator allows your engine to operate within a “normal” temperature range; of about 195 to 220 degrees F. But, as efficient as today’s engines are; they still waste a lot of the heat energy they produce. Above all, the most common problem a car radiator falls prey to; is clogging (both internal and external) as well as leaks.

When did my car overheat and now it wont start?

Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › My car overheated and now it wont start! This topic contains 25 replies, has 10 voices, and was last updated by Nicole Peach 4 months, 1 week ago.

What should I do if my car is overheating all the time?

If it gets hot at all times, then it may have a clogged radiator, or more commonly a leaking head gasket. I would perform a block test prior to changing anything else. If that fails the test, then the engine will need to be disassembled and repaired. If it passes, then it may need a radiator.

How to tell if your car engine is overheating?

Check your engine oil, if it looks milky on the dip stick you have cracked the head, water is getting into your engine, to fix the head has to come of. 15 people found this helpful. Also, make shore the fan belt is still on, this may be way it overheated in the first place. 3 people found this helpful. okay, the engine oil was fine.

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