One of the parameters is the operating temperature. If your vehicle has an externally clogged radiator, you can usually see it from the front of your vehicle. Look behind the grill or bumper for the fins of the radiator.
If there are leaves, dirt or debris blocking air from flowing over the fins of your radiator, it can cause your car to overheat. Removing the blockage either by washing or brushing away the debris can solve your overheating problem.
You have to be extremely careful while removing external blockage from the radiator to avoid both damaging the delicate radiator fins and from injuring your hands on the sharp edges. You can check for internal radiator clogs by opening the radiator cap when the engine is cool. Check the fluid and the radiator for a brown color, or suspended contaminates in the coolant.
If you have an infrared thermometer, you can also check the temperatures at different points in the radiator while the car is running and warm. They should drop uniformly as coolant travels from the top hose of the radiator diagonally to the bottom hose. If there are places where the temperature is the same, or drops significantly, you probably have an internal clog.
The best thing to do in this case is a full cooling system flush using BlueDevil Radiator Flush to clean out the clog and add fresh coolant to your clean system. A broken thermostat can also cause your car to overheat. When the engine is cold, the thermostat closes. This allows coolant to circulate through the engine block and the heater core in your car, but not the radiator.
This keeps the coolant in your engine at a specific temperature designed for best operation. If the thermostat fails, it can stick shut. This will keep the coolant from ever entering the radiator and your engine to overheat.
You can check this by checking the temperature of the upper radiator hose. If it is still cold, you may have a broken thermostat and should remove the thermostat and test it. Be careful when checking the upper radiator hose temperature as it could be hot enough to burn. A thermometer is best for this check. You can check for clogged or fouled coolant passages in the same way you would check for an internal radiator clog and also solve that problem by using BlueDevil Radiator Flush.
An improper air-fuel mixture can also cause on overheating condition. A lean condition during combustion will cause a hotter than usual combustion process, producing excess heat and possible overheating. Similarly, late ignition timing can cause excess heat in the combustion process. If your car is carbureted, try adjusting the carburetor to run another step or two rich. Fuel injected cars rarely run lean, but you may consider checking your fuel system components like the filter, injectors and O2 sensor.
If your car is old enough to have a distributor, you can check and adjust your ignition timing to factory specifications, but even on older cars this problem rarely exists. The most likely cause of an engine overheating is a low coolant level. Your cooling system has many connections and components that are susceptible to failure even under normal conditions. There are multiple gaskets, hoses and seals that may fail in the cooling system, causing a leak.
If you notice puddles of coolant on the ground, you most likely have an external coolant leak from a hose or the radiator. If you notice coolant inside your car, you likely have a broken heater core. BlueDevil Products are guaranteed to seal your leak permanently and have no particulate matter to clog or foul any components in your cooling system.
My Cadillac Deville overheated before the 50 minute Bluedevil process time, so is there anything that can be done now? Any suggestions besides to save the car would be greatly appreciated! It sounds like your leak may be a little larger than what BlueDevil is intended to repair. Please contact our claims department The BlueDevil Head Gasket Sealer does not contain any solid or particulate matter in the product, so it is non-clogging.
Hi blue devil pro I have a Chevy impala and it is overheating and I have no heat. So any ideas about what it could be. Thank you for asking about your Chevy Impala. Are you noticing a bubbling or a boiling over in the system?
What does the bubbling indicate? Thank you for asking about your Chevy Suburban. A bubbling or boiling over can indicate a couple of different things. It could be an air pocket trapped in the cooling system, creating extra pressure in the system and causing bubbling.
Bleeding the system would eliminate the air pocket and any consequential bubbling if that was the case. You can use a block-dye test to confirm whether or not that is the case. I have a ram that was leaking from behind the crankshaft pulley…but it was not getting hot. I added a bottle of blue devil and some coolant afterwards and my truck started heating up! What could be happening?
Thank you for asking about your Dodge Ram Based on your description, there could be an issue with flow in the system and your coolant may be restricted from circulating properly.
Depending on how many miles are on the vehicle, the water pump may be in need of a replacement. Unfortunately, a vehicle can overheat for a number of different reasons.
Please contact our technical support line at to discuss your vehicle in more detail. Hey i was wondering if you had to take the thermostat out of the system to be able to use this product effectively.?
Yes, if you are using the BlueDevil Head Gasket Sealer yellow label then we strongly recommend removing the thermostat to ensure proper results. My engine is a QD32 and it has been giving warning of high temperature and we have replaced the cylinder head gasket and cleaned the radiator including replacing the radiator cap but it still has that problem, Kindly advise. There are a number of reasons your vehicle could be overheating.
It could be a defective fan switch, fan clutch, clogged or restricted cores, or heavy scale and sediment deposits within your cooling system. At this point we recommend having your vehicle looked at by a Nissan specialist so that you can have a better idea on what exactly you are dealing with.
Once you are able to pinpoint the cause of the overheating you will have a much better idea on how to solve the problem. I just bought it from someone who has it in a garage for 2 years.
But the gauge inside of the car is still telling me that it is getting hot. If it is that, where would that be located and how would i replace it?
Looking for a quick cheep fix, because this is my first car. I have someone who will help me install it, all i need to know is what could be wrong with it. There are a multitude of possible reasons the vehicle may be overheating. Because the car has been sitting for awhile you may want to take it in to a certified mechanic to truly diagnose the current problem or problems at hand.
I replaced the water pump and thermostat in my 96 grand prix still runs hot,my top hose be hot and the bottom hose cool. But my Radiator Be real hot? It sounds like you may be having a restriction of flow. We recommend first checking that the thermostat is functioning properly; if not, you should replace it. If you are still having these issues after the thermostat has been replaced then we recommend running a bottle of the BlueDevil Radiator Flush through your system to remove any antifreeze build up or other restrictions from your cooling system.
I have a z28 camero with v8 engine. My low coolant light comes on but the radiator and the coolant tank are both full. The car runs at a constant degrees. It takes about minutes for the light to go on but then it stays on. Thanks for your question about your 99 Camaro. It sounds like you have a bad coolant level sensor. Your radiator should have a sensor just below the radiator cap on the back of your radiator that measures the coolant level there. These sensors are known for going bad, and usually act like you are describing and come on after a few minutes of driving.
Try replacing the sensor and seeing if your low coolant light stays off. What could be wrong with my impala? It heats up. Still overheating. Based on your description, it is tough to say exactly why your vehicle is overheating. If you are hearing the fans come on, you may have a restriction in the cooling system or there may be a build up of pressure in the system. We recommend taking the vehicle to a certified ASE mechanic and having it properly diagnosed.
The Mech did bad job. Oil spiting out or radiator. A new Mech used Blue devil sealer has fixed all that. Now on long drives hot days it over heats again. How can we flush the radiator? You may flush the radiator with the BlueDevil Radiator Flush. Thanks for your question about your Envoy. Great job pulling over and stopping when the temperature gauge got too high! If your coolant is full the problem most likely stemmed from your thermostat or your cooling fans.
Try letting your car idle up to temperature and seeing if the fans kick on before the temperature gauges goes up. If the fans are working properly then you most likely just need a new thermostat to help keep things cool. I have a Pt Cruiser and it runs hot but if I turn on the heater it cools down but now even that isnt doing anything.
I changed the thermostat and that helped for a bit but it is doing that again. I have coolant in the car and everything and it is also in the overflow tank. How do I tell if my cores in my radiator are clogged or if my water pump is still working properly??? If you were getting heat in your Pt Cruiser, then your water pump is most likely working properly and the heater core is not clogged. You may have some other restriction in your cooling system causing the vehicle to overheat.
We recommend having your cooling system flushed and see if that solves the issue. If not, you may want to have the vehicle looked at by an ASE certified mechanic.
My car was leaking so I had the water pump replaced. Do you think it may be clogged? It is possible that there is an air bubble stuck in the system. You may refer to your owners manual on how to bleed the cooling system so that you may burp the system. This can be tested in using a Block-Dye Tester.
The nexti went to work came home then 2 hours later, I went to gas station which is right around the corner from my house. As i was pulling in I seen how my temperature gauge was in the middle and went quickly to hot so i went ahead and parked my truck. It was really steamy popped hood and notice steam was really coming from around fan belt area….. So my thoughts are maybe that squeaking sound was from my belt???? Im not sure any opinions on why my truck started overheating once again, when i thought it was done taken cared of????
Thanks for your question about your truck. It sounds like you simply had a water pump go bad. If your water pumped started to go bad it could have started leaking around the pump shaft seal. If that was the case it would have gotten your belts wet which would have caused them to squeak like you described.
Try removing the fan belts and seeing if your water pump pulley is loose and you can move it at all. If you can, replacing your water pump should get you back on the road! I immediately turn the heat on and the temp went straight to normal. What could this be? I just got a brand new radiator 2 months ago. Your vehicle can overheat for a number of different reasons. Based on your description, it is hard to pinpoint what the reason is but, you could have a defective fan switch or a defective fan clutch.
We recommend bringing your vehicle to a certified ASE mechanic and getting a proper diagnosis. Unfortunately, we do not manufacture a product for when oil is getting into the radiator. Feel free to contact our technical support line at with any other questions. When i firsr start driving my Lincoln Town Car the heat guage goes to the line before the H then the car idle and the temp guage goes back to normal and stay there.
What could the problems be. Thanks for your question about your Lincoln Town Car. It sounds like your thermostat is sticking shut first thing in the morning causing your car to overheat before the thermostat opens and allows coolant flow to your radiator. This overheating is also causing an excessively high pressure in your cooling system which would cause your heater core to leak which is why you get coolant on the passenger floor.
Our recommendation would be to change your thermostat first and see if that stops your overheating and your leak. If the leak continues you may need to replace your heater core as well. Range Rover owner here. After doing so I realized my radiator was clogged externally with dirt and grime.
After cleaning with a soap sprayer and water, inside and out. I reattached the rad. Truck ran well. One day later, bubbles from the overflow tank and overheating as well as white smoke from tailpipe and left side exhaust manifold…?????? Anything I can do before I go buying a new engine. To give yourself the best overall chance of BlueDevil working successfully, in addition to the directions, you should remove the spark plug from the cylinder with the leak; this will be the spark plug from the cylinder with a low compression reading.
Leave that plug out for the 50 minute idle in order to relieve the pressure from building up and thus allowing the product to seal properly. I have a Kia Sorento my car started overheating i had a mechanic look at my car and he told me it was my water pump so i had the water pump replaced along with the timing belt on my car this happened back in February and everything was fine.
There are a number of different reasons as to why your vehicle would overheat. Based on your description, it could be that you have a defective fan switch or a defective fan clutch. We recommend having the vehicle looked at by an ASE certified mechanic for a proper diagnosis.
Your Chevy could be overheating for a few different reasons. We recommend having the cooling system flushed and hopefully that alleviates the overheating. If not, you may want to bring the vehicle to a certified ASE mechanic for a further diagnosis. See Details. Schedule a Free Battery Check today. Save on 3-Year Alignment and Road Hazard programs when you buy 4 tires. Find Tires. Includes tires, alignment, brake, battery, and select fluid checks.
The Bottom Line. If you are in a vehicle that is overheating, do not try to drive farther. Pull over, stop driving and turn the vehicle off.
Actions can be taken to assess any issues, though the best course of action is to have the vehicle towed to your nearest Goodyear Auto Service. What does a cooling system do? The overall cooling system keeps a standard operating temperature for the engine by circulating coolant, or antifreeze, through the engine to the radiator, thus pulling heat away from the engine. What happens when an engine overheats? Select Services. What to do if your vehicle begins overheating. Pull over and assess the situation.
As soon as you notice an issue with your vehicle, the next course of action is to pull off the road to a safe and clear area and turn off the vehicle.
If the vehicle is overheating, continuing to drive with a potentially damaged engine may cause permanent damage. Keep moving only if necessary. If there is a situation where you are not able to come to a complete stop in a safe and clear area, keeping the vehicle slowly moving may still allow a constant airflow around the motor to help aid in natural cooling.
Leaving your car at rest with the engine running may worsen the problem, which can quickly produce additional and unwanted heat. When the vehicle is still in motion, turning off the air conditioning and increasing the heat to high may help to pull additional heat away from the engine. Open all the windows The goal is to release as much heat as possible. Rolling down and opening as many windows as possible is another way to allow heat to flow out of the vehicle.
Call for assistance The number-one option at this point is to call for service or roadside assistance. Do not try to open the hood of your car until the vehicle has cooled down Once the vehicle is at a complete stop and turned off, do not lift the hood. Common reasons for overheating engines. Below are common factors that can cause a car to overheat:. Cooling system leaks An empty coolant reservoir tank could be caused by a potential leak.
If the coolant is dirty or has too much buildup, it can stop the coolant from moving through the pump, which can lead to an overheating situation. Radiator issues Radiators and their fans help to reduce heat from the engine by decreasing coolant temperatures. Issues with the fans may reduce the capability of the radiator to remove heat, which will cause unnatural temperature increases.
Low oil levels may increase engine temperatures. Thermostat failure Like the thermostat in a home, the thermostat in a vehicle is needed to regulate engine temperatures. A thermostat failure may cause harm to the engine by not allowing the coolant to flow as intended by the vehicle manufacturer.
Issues with the belts and hoses If coolant hoses are leaking, blocked or ruptured, or if the belts are worn out or frayed, their purpose of maintaining air and coolant flow to and from the engine and related systems will be limited and may lead to unexpected engine damage. Routine inspections can also help you fix any potential radiator or engine issues before they worsen. This summer, feel the heat at the beach, not on the road. Keep your cool and head to your nearest Firestone Complete Auto Care for the nationally-trusted auto repair advice and service you need.
Blog Categories Blog Home. Why Do Engines Overheat? But first, you've got to notice the symptoms of overheating, which can include: Steam which can look like smoke coming from under the car hood. An engine temperature gauge on your dashboard that spikes to "H" or into the red. Engine temperature gauge symbols vary, so consult your owner's manual. A strange smell coming from the engine area. For example, leaking coolant can smell sweet while leaking oil might smell more burnt.
Find a safe place to pull over. Check and add coolant if you have it. Restart the engine. Up Next. Take care of your car and itll take care of you. Learn what's included in a Complete Vehicle Inspection and how it offers a full view of your car's health. You want to feel the burn in the gym, not when you get in the car.
Nothing ruins a fun road trip like car trouble. Take care of car maintenance before a long road trip to help make sure you reach your destination.
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