Why is my car still running hot?

I got a new radiator a new thermostat a new coolant fan sensor a new radiator cap and my car still runs hot. I was told when you turn the heat on the fans in the front under the hood should cut on but my heat is not working and my fans aren't turning on. With all these repairs did I do not know why my car is still running hot

My car has 226296 miles.
My car has an automatic transmission.

Experienced mechanics share their insights in answering this question :
Hi there. The radiator cooling fans are designed to come on with the air conditioning turned on. They are not designed to come on with the heater turned on. The fact the heater is not working leads me to believe, there may be air trapped in the cooling system. A cooling system flush would resolve this problem. A quick check to see if the radiator cooling fans are operational, would be to turn on the a/c. Inoperative radiator cooling fans could be several possibilities, a blown cooling fan fuse, a faulty cooling fan relay, a faulty cooling fan motor(s). Proper diagnoses should be performed to avoid unnecessary repairs. I recommend having your vehicle’s still runs hot be diagnosed and repaired by a certified technician, such as one from YourMechanic.

How to Identify and Fix Common car Problems ?

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

The most common reasons a Dodge Stratus is overheating are a coolant leak (water pump, radiator, hose etc.), the radiator fan, or a failed thermostat.
The most common reasons a Dodge Stratus heater isn`t working are a broken heater blower motor, a problem with the thermostat, or a failed heater blower motor resistor.
Leaking Cooling System: Leaks are the #1 reason a vehicle begins to overheat. Leaks in hoses, the radiator, water pump, thermostat housing, heater core, head gasket, freeze plugs and a few other things can all lead to problems with the vehicle`s cooling system.
In general, it`s because something`s wrong within the cooling system and heat isn`t able to escape the engine compartment. The source of the issue could include a cooling system leak, faulty radiator fan, broken water pump, or clogged coolant hose.
Low coolant: Whether caused by a leak or water evaporation, low coolant is the most common source of poor heater output. Thermostat: A stuck-open thermostat prevents the engine (and coolant) from heating up. Heater core: A clogged heater core restricts coolant flow, giving up little or no heat.
There are a variety of reasons that a vehicle can overheat, such as cooling system leaks, blocked hoses from corrosion and mineral deposits, radiator issues or broken water pumps. Regular inspections may help avoid overheating issues down the road. Come in today for a consultation on your coolant/antifreeze fluid.
5 steps to take when you have an engine overheating:
  1. Turn on the heater. It sounds counterintuitive, but Reina recommends turning on the heater. …
  2. Sit tight. If you don`t have roadside assistance, be patient; it will take at least 15 minutes for the engine to cool. …
  3. Add coolant. …
  4. Drive to a service station.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

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.

Car runs hot and doesnt keep coolant
ANSWER : Hi there. Most of the time, overheating issues are caused by a radiator leak, leak in the coolant lines, or a failed thermostat. The worse case scenario is that you’d have a blown head gasket.

However, if you’re seeing small drips on the ground, the leak could be coming from one of the hoses, which might also introduce air pockets into the coolant line. This could be what’s causing your overheating situation. However, it might be a good idea to have a local certified mechanic stop by your home to do a complete cooling system inspection. That could save you a lot of money instead of replacing parts that you are unsure are faulty.

Why is my car still running hot?
ANSWER : Hi there. The radiator cooling fans are designed to come on with the air conditioning turned on. They are not designed to come on with the heater turned on. The fact the heater is not working leads me to believe, there may be air trapped in the cooling system. A cooling system flush would resolve this problem. A quick check to see if the radiator cooling fans are operational, would be to turn on the a/c. Inoperative radiator cooling fans could be several possibilities, a blown cooling fan fuse, a faulty cooling fan relay, a faulty cooling fan motor(s). Proper diagnoses should be performed to avoid unnecessary repairs. I recommend having your vehicle’s still runs hot be diagnosed and repaired by a certified technician, such as one from YourMechanic.

Why is my 2009 Ford Taurus still running hot after I put new water pump, new thermostat on and flush radiator twice but it still runs hot.
ANSWER : You may still have air pockets in the cooling system. If you do not bleed out the air it will still overheat. After bleeding all the air out of the engine and heater core then see if it still overheats. This engine has special bleeders for removing air from the system. If after bleeding out air it still overheats then you may have blown a head gasket and will need more testing by a mechanic like one from YourMechanic to isolate what head has blown a gasket.

Car runs hot replaced the thermostat still running hot whats the problem
ANSWER : Overheating 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 temperature by turning on and off at specific temperature thresholds. When this switch is not working properly, this can cause the fans to come on intermittently, all the time or sometimes not at all. When this happens you will notice a temperature spike and drop occasionally as the fan comes on and off. When your thermostat is not working properly or is stuck closed, this will not allow the coolant to properly circulate through the engine, which may cause the engine temperature to fluctuate erratically or in some cases just remain hot. You may also have a water pump that is beginning to fail. Water pumps often times will begin to produce a bit of a whining sound when they are starting to fail. A common problem also associated with this is the water pump may begin to leak around the water pump shaft due to the seal being damaged. In addition to leaking around the pump, you may have a leak elsewhere in the cooling system coming from one of the hoses going to or from the radiator. Lastly, you may have a failing cylinder head gasket allowing coolant to leak from the water passages into the cylinders resulting in the coolant being burnt in the combustion chamber with the fuel. If this is the case, you may also notice a bit of white smoke coming from your exhaust which is a product of the coolant being turned into a steam like vapor. I would suggest having an expert from Your Mechanic come to your home to diagnose your cooling system.

Power steering loss, no belts are turning but the car is running fine. I also have a soft pedal. Whats wrong with my car?
ANSWER : I have only seen this situation once in my 30+ years and it turned out to be a broken crankshaft pulley. Belts are driven by the engine. The crankshaft pulley spins the belts, which in turn spin the air conditioner compressor, power steering and water pumps, and the alternator. The vehicle should be towed to your local repair shop and not driven. Without the water pump spinning to circulate the coolant, the engine will quickly overheat and result in more extensive damage.

Replaced alternator on car 2 times each time shows it’s charging 14v let car run for a little bit then test drive and car voltage
ANSWER : There are reports that the replacement alternators will not communicate with the engine computer and will not charge correctly. I recommend using only the manufacturer approved replacement part. It can be new or remanufactured but approved for use in the vehicle. Some lower cost alternators on the aftermarket will have charging problems since they will not communicate with the ECM on the vehicle and will stop charging.

My car is running hot…it was smoking from under the hood, after a little bit of cooling, the smoke stopped, but it still smells
ANSWER : I believe you have a bad thermostat. Symptoms of a bad thermostat are coolant boiling over and very tight upper radiator hose. The smell is going to be because of the antifreeze on the engine. No worries that will go away after having the car on for a while because it will burn off.

Replace your thermostat and I’m sure your problem will be fix. Consider YourMechanic if you would like to have a technician come to your home to diagnose the issue and replace the thermostat.