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 that be why it is still overheating?
My car has 170000 miles.
My car has an automatic transmission.
Experienced mechanics share their insights in answering this question :
I’m sorry to hear about your overheating issues. There are a few possibilities that can cause an engine to overheat. 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. I would first look at the cooling fan and/or the cooling fan switch. It would be necessary to start with a cold engine and check to see if the fan comes on as the engine warms up. Most of the time, you can do a quick check by turning on the air conditioning, as this should signal the fan on also. If this is something you feel you could use a hand in diagnosing/repairing, contact a certified mechanic, like the mobile mechanics at YourMechanic.com.
How to Identify and Fix Common car Problems ?
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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.
Why is my car overheating but it has coolant in it? It could be that the coolant concentration is not correct, or you may have a bad thermostat, a failed water pump, broken drive belt, or a bad radiator or radiator fan.
The most common reasons a Honda Civic is overheating are a coolant leak (water pump, radiator, hose etc.), the radiator fan, or a failed thermostat. Coolant leak (water pump, radiator, hose etc.)
With a new radiator installed, your car may still be overheating for a number of reasons, such as a broken water pump, worn belt, blocked radiator, malfunctioning radiator cap, or air in the cooling system.
One way to check for proper coolant circulation is to check the upper and lower radiator hoses. The upper radiator hose should be hot, around 190–200 °F. (The safest and most accurate way to get this temperature reading is with an infrared thermometer.)
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.
Overheating is the most common symptom of a failing thermostat. Due to corrosion or aging, your car`s thermostat can get stuck in a closed position. If this happens, the thermostat will not let the coolant reach the radiator, and, as mentioned above, the engine will overheat, causing severe damage.
Overheating can be caused by a: Cooling system leak – This is the most common cause for a car to overheat. The radiator, hoses, water pump, head gasket, and thermostat housing are all components of the cooling system, and all can be susceptible to leaks.
With all the hoses and bolts attached, fill the new radiator with coolant. Check oil and transmission fluid levels in case any was lost during the installation. This is an excellent time to flush your coolant system and replace the old coolant with new coolant.
The thermostat, located between the radiator and the engine, ensures the coolant stays below a specific temperature. If the temperature of the coolant falls below a certain temperature, the thermostat closes the passage blocking the flow of coolant to the radiator and sends it back to the engine.
If you notice that your coolant level is dropping quickly or that there is coolant leaking from your vehicle, it could be a sign that the water pump is failing. When the water pump fails, it can cause coolant to leak into the oil, which can lead to engine problems.
If the coolant tank is full, the problem may be electrical or mechanical in nature, in which case a tow to the nearest repair shop is definitely in order. A leaking hose, worn or broken fan belt, bad water pump, or malfunctioning thermostat may be the culprit.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
Replaced water pump, radiator and thermostat car is still overheating. What can it be?
ANSWER : I’m sorry to hear about your overheating issues. There are a few possibilities that can cause an engine to overheat. 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. I would first look at the cooling fan and/or the cooling fan switch. It would be necessary to start with a cold engine and check to see if the fan comes on as the engine warms up. Most of the time, you can do a quick check by turning on the air conditioning, as this should signal the fan on also. If this is something you feel you could use a hand in diagnosing/repairing, contact a certified mechanic, like the mobile mechanics at YourMechanic.com.
My car still overheats, I replaced water pump and thermostat, and now after water pump install it knocks bad
ANSWER : Hi there:
Trying to diagnose an overheating issue remotely is incredibly difficult. However, there are three things you can do to attempt to solve this issue. First, remove the water pump, verify it’s the right replacement part and reinstall with new gaskets. Second, flush the radiator coolant fully, as the issue could be caused by an obstruction inside the heater core or other coolant lines. Third, make sure to check all electrical connections to the radiator sensors and components. If you check and complete all three of those tasks, and you still have overheating problems, contact a professional mobile mechanic to complete a car is overheating inspection.
My water pump is leaking but I replaced timing belt and pump a year ago. Can I just replace the water pump this time?
ANSWER : Hello. You can just replace the water pump in this case. Although, the cost of just the timing belt is fairly negligible in comparison to the total labor of the job. My estimator says the water pump is a 6.5 hour job. Multiply that by whatever the shop rate is and you have the total labor without parts. You end up saving about $100 or less on parts if you only replace the pump.
The deciding factor will be the condition of the timing belt. If it has problems, you won’t be saving yourself any money by reusing it. In addition, there are seals and pulleys that may need to be replaced as well.
Assuming all the related parts were replaced the first time around, there isn’t a reason you can’t reuse them. I would say you should weigh the savings of reusing them against the actual condition of the parts. This is best determined after a complete disassembly. Keep in mind, time estimates will vary a bit depending on many factors. Either way, the labor is the largest cost.
If you would like to have the water pump replaced, a certified professional from YourMechanic can come to your car’s location to perform this service at your convenience.
car is overheating and leaking water and anti freeze
ANSWER : Coolant leaks can occur because of cracked hoses, leaking gaskets, faulty water pumps, or damaged radiators. When the coolant level goes low, the engine will start to overheat due to the low coolant level. I would first recommend giving the cooling system a visual look over. If it is not obvious where the coolant leak is coming from, I would recommed having the cooling system pressure tested in order to determine the leak source. If you would like to have your cooling system pressure testedcoolant is leaking inspection, consider YourMechanic, as a certified technician can come to your home or office to inspect your cooling system.
Car overheating replaced thermostat. Wondering if ots the water pump. Flushed radiatior. Car wont turn over. Idles and stalls.
ANSWER : Hello, thanks for writing in about your Hyundai Accent. It sounds like you have a leaking head gasket causing the car to run rough and overheat. You should have a mechanic, like one from YourMechanic, diagnose the overheating issue firsthand for an accurate repair.
I have a 00 deville I just changed the water pump housing and water pump the thermostat and radiator the upper and lower radiator 2000 Cadillac De Ville
ANSWER : Hi there – I suspect your radiator is clogged or otherwise corroded so that it is not shedding heat as efficiently as it should. Idling with the heater on was getting rid of heat without loading the radiator. When you’re driving, the engine is generating more heat than both the heater and radiator can get rid of. Checking the difference between hot coolant going to the radiator (top hose), and going back into the engine (bottom hose) may show that there is very little temperature difference. This means the radiator is not doing it’s job, and need to be professionally cleaned or replaced. Good diagnostic effort on your part to avoid the obvious "it’s another Northstar head gasket" diagnosis! For confirmation, I would recommend an overheating inspection by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.
My car is getting overheated, replaced the water pump, but coolant is still running out.. After the car warms a lil..
ANSWER : A thermostat is a good first step with overheating issues, usually because it’s inexpensive and easy to replace. So it’s always good to eliminate that as a possibility, but I think you may have more problems then that. I presume you mean that coolant is running out of the overflow tank. This happens because of excessive pressure in the cooling system. It can happen if the coolant is low, because air pockets in the system cause hot spots where the remaining coolant will boil. It can be difficult to get all of the air out of the system so that’s a possibility especially since you just changed the waterpump. It can also happen if there is combustion pressure leaking into the cooling system as it does with a bad head gasket.
When you change the thermostat, find a heater hose or some other small cooling hose near the top of the engine and disconnect it. Refill the engine with 50% diluted coolant until coolant runs out of the hose you disconnected, then hook it back up. Run the engine with the defroster on maximum until you feel heat coming out of the dash vents, checking the coolant level periodically. When you feel good heat, you know the engine is full. If you continue to have a problem, contact YourMechanic and they will send a technician to your home to diagnose your cooling system and tell you what you can do.
My 2003 honda civic EX 1.7L is overheating. I replace the thermostat, replace the cooling fan temperature switch, remove the radia
ANSWER : It is likely your engine has a blown head-gasket, worn out water pump or somehow has a huge air bubble inside the engine that needs to be bled. The drop in engine temperature while on the freeway is actually a good sign – it indicates your radiator is getting good coolant flow, and the radiator is doing its job, transferring heat out of the engines cooling system. A YourMechanic certified technician can come to your location to perform a Car is overheating Inspection on your vehicle and help you diagnose and repair this issue.
