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.

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 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 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 causes the radiator on a car to overheat?

14 – A Collapsing Radiator Hose Will Shut Down Your Cooling System. 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.

How often should you flush your Radiator if your car is overheating?

If your car has more than 50,000 miles on it, your radiator may begin to get gummed up. You can avoid this and other problems associated with old coolant by flushing your radiator once a year. There’s nothing good about an overheating problem. If your engine is running hot you should try to fix the problem as quickly as possible.

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 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.

Can a broken thermostat cause an engine to overheat?

Broken Thermostat 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.

What happens if your car’s radiator overheats?

Serious Overheating. If the coolant is boiling in the radiator, it may blow a hose off its clamp, blow a hole in the side of the hose or cause the radiator to explode. What’s worse, in an engine this hot, the pistons might swell. This damages the bore, which means a very expensive engine repair — if it is repairable at all.

Is the radiator on my 383 overheating?

My 3 core stock radiator did a fantastic job cooling my 383 stroker motor. Never had any issues as ran well under 200 degrees no matter how hot it is outside. But it started leaking. Rather than fix the old one i thought I was doing a good thing by replacing it with a new 3 core aluminum radiator with electric fans.

What happens if a radiator leaks all the water?

If a radiator leaks all the water out, the vehicle will overheat. Once the vehicle overheats, it could cause other engine damage. The engine may lock up and stall the car.

Is the radiator on my Camaro overheating?

My 383 is overheating with a new aluminum radiator. Help! | Team Camaro Tech My 383 is overheating with a new aluminum radiator. Help! My 3 core stock radiator did a fantastic job cooling my 383 stroker motor.

Why does my car have a radiator fan?

You probably already know the purpose of the radiator and the cooling system in your car. When you are driving fast, the wind is passing through the radiator to cool the coolant down without issues, but when you are driving slow, there is no wind pushed through the radiator. This is why we use a radiator fan.

Where is the relay on a radiator fan?

The fan relay is often located in the engine bay’s fuse box, but the best way is to check your repair manual to find where it is located. Testing a 4 pin relay is often very straightforward. Remove the relay and give 12 volts to pin 30 and 85. Ground pin 86 and check if there is voltage coming out from pin 87.

What are common reasons my Chevrolet Cobalt overheats?

What are common reasons my Chevrolet Cobalt overheats? While there are a variety of reasons your Chevrolet Cobalt is overheating, the most common 3 are a coolant leak (water pump, radiator, hose etc.), the radiator fan, or a failed thermostat. See what others are asking about their Chevrolet Cobalt.

What is coolant temp on Cobalt LS engine?

2006 cobalt LS engine… engine cooling fan does not turn on and the coolant temperature goes up to 250 and I’ve to shut it down. I changed the coolant temp sensor and thermostat and still does it.

Is there a problem with my 2005 Cobalt?

Certain 2005 Cobalt cars and 2005 Pursuit cars may have a problem with a defective fan wiring harness; voltage spikes may damage the transducer resulting in a loss of A/C. This new harness is designed to isolate the voltage spikes, refer to GM bulletin 05034A. It is listed for the following vehicles with the 2.2L engine with Air Conditioning:

Can a failing radiator cause an engine to overheat?

A failing radiator can cause the engine to run hot or overheat. Most radiators are made of metal and plastic. The plastic parts can become brittle and crack over time, causing a… Read More The bad thermostat can cause two different sets of problems, depending on whether it’s stuck open or stuck closed.

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.

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.

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 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.

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.

Does overheating damage the radiator?

Here’s what can happen if you keep driving while your engine is overheating. Your radiator is likely already damaged, but in the early stages of overheating, it can be repaired. The more you drive on it, the more you’re likely to see burst hoses burst, failed radiator stems, and exploding cooling systems.

Why would a brand new radiator overheat?

The fan helps keeps the radiator cool when the vehicle is not in motion. The fan is hooked up to the radiator through a network of various wires that can become prone to corrosion over time, and the radiator can overheat if the fan isn’t providing adequate air circulation when at a stop or standstill if it gets hot enough.

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.

Will a radiator flush help overheating?

If you ARE having an overheating problem, then “flushing” will not help and we need to find the source of the overheating. Flushing is fine for maintenance, and will remove SOME of the upper rust and junk inside the radiator but will NOT remove any rust or mineral deposits that will be at the bottom of the radiator.

What happens if your car overheats on the road?

An overheating engine is more than an inconvenience, it can be an expensive engine killer. It may even leave you on the side of the road then on to the repair shop for a serious repair bill.

When do you Know Your Car engine is overheating?

The fact is, there are usually a few culprits to look into when your engine is running hot. If your engine is overheating shortly after you leave, or it heats up even on short trips, you should check the following possible causes and repair suggestions. Symptom: Engine quickly overheats.

Why does my car heat up when I’m not driving?

If you have an electric cooling fan that isn’t coming on, this can cause your engine to overheat. This fan draws cooler air through your radiator when your car isn’t going fast enough to do the job naturally. You can test this by letting your car idle long enough for the engine to heat up.

Why does my car overheat when I Turn on the heat?

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. If you don’t have enough coolant in there to do the job, heat will build up and your engine will overheat.

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 to do if your car is overheating on a short trip?

Any of the above causes for overheating on short trips. The car is overloaded or being driven too hard. The Fix: Lighten the load and back off the gas. The radiator or block may be clogged. The Fix: Reverse flush the cooling system and fill with fresh coolant.

What happens if you remove the thermostat on a car?

Removal of the thermostat would have an adverse effect, causing a lowering of cooling efficiency. Do not remove the thermostat, even if the engine tends to overheat. a) Remove the 2 nuts holding the water inlet to the water pump, and disconnect the water inlet from the water pump. B) Remove the thermostat. C) Remove the gasket from the thermostat.

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.

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.

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.

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.

Why does my car temperature go up when I run?

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. If I don’t run the AC, I will still “red-line” in temperature if I run 100 – 110 km/h for more than 1/2 hour.

What causes a Chevy Tahoe to overheat?

If the fan motor does not work, there will not be enough air movement through the radiator to dissipate the heat in the coolant. The symptom usually associated with a faulty fan… Read More

What causes a Cadillac CTS engine to overheat?

A failing radiator can cause the engine to run hot or overheat. Most radiators are made of metal and plastic. The plastic parts can become brittle and crack over time, causing a…

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.

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.

Why does my car overheat when I refill the coolant?

If the coolant system is working properly, you should never have to refill your coolant because of low level. If the coolant has gone low once, you may have to bleed the air out of the coolant system after your refill. A clogged radiator will make the coolant to not flow properly through the engine and may cause an overheating engine.

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.

What happens when coolant goes low on an engine?

However, if the coolant has gone low, you do most likely have an internal or external coolant leak on your engine. If the coolant system is working properly, you should never have to refill your coolant because of low level. If the coolant has gone low once, you may have to bleed the air out of the coolant system after your refill.

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.

How to test a new radiator before installation?

To test a new thermostat before installation or an old one that is suspect put it on top of your stove in a pot of water. Turn on the heat and note the temp of the water with a candy thermometer when the thermostat pops open. stat starts to open at stamped temperature and be fully open in another 10°F.

What happens when the thermostat on a car goes bad?

The engine thermostat will not allow the coolant to flow into the radiator when the engine is cold. When the thermostat goes bad it can do so by sticking closed. This means the coolant never gets a chance to be circulated to the radiator.

When do you flush the radiator do you change the coolant?

If you’re driving a vehicle with an internal combustion engine, then periodically you’ll need to flush the radiator and replace the coolant, which is also called antifreeze.

Where does the coolant go in a car radiator?

Almost all automotive vehicles use a closed-loop, liquid cooling system. The water pump circulates coolant through the cooling tubes of the radiator, where it cools and travels through the engine passages and hoses. Coolant, or antifreeze, is designed to flow smoothly through all of the cooling passages, with no air blockages.

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 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.

What to do when your car engine is overheating?

testing it is pretty simple, while the engine is hot, ask someone to turn off the engine while you are looking at the fan. If the fan continues to turn after the engine is off, your fan clutch has to be replaced. A proper fan clutch will resist the turn while it is hot and the engine is off.

How long does it take for an overheating car to go back to normal?

It is normal that the temp will raise a little when you turn the engine off (no cooling system is running and the engine is still hot)and it usually takes 1-2 minutes for the temp to go back to normal. The question is, what is your “normal state” and what is the overheating state…

Why do old radiators need to be replaced?

Over time the metal pipes and radiators in your heating system can rust, this rust is collected by the water running through your system and returned to the boiler where it can collect. This collection of debris is called ‘sludge’ and it’s a good reason to replace old radiators.

What should I do if my radiator is not working?

Martin Smith an emergency plumber explains 20 of the most asked question including answers to those who are currently experiencing a radiator problems. Radiator not getting hot? Removed radiator causing problems? Will moving a radiator cause any problem to my system? What will happen if I take away my radiator?

Do you need to replace cast iron radiators?

Steam and hot water systems deliver heat through radiators, which stay hot for quite a while even after the boiler shuts off, and many brownstones come with the original cast iron radiators intact. Whether to replace, restore or hide them beneath a radiator cover is mostly an aesthetic preference.

Why is my car overheating after replacing the radiator?