In other engines, there is a cast in passage built into the water pump or front housing. All of my vents and everything works completely fine, and it's filled with coolant. Dan Ferrell (author) on September 02, 2019: Your theremostat is probably working fine. ... my bmw e36 1996 model it been over heating for so long i bought a new water pump and the Colling pipes but still do the same thing please help me. How Do I Know If My Car Needs a Thermostat? Sometimes the propeller is worn or broken and since this is an internal issue you can’t see the problem. Replacing the entire water pump is the solution in this case. This unit also controls, among other... Hi there: The OBD-II trouble code P-0304 indicates that cylinder four is misfiring or having ignition issues. Replace the thermostat. Because it is placed deep in the car engine and you can not touch it easily. Engage the parking brake and block the wheels. A faulty thermostat is only one of them. I did however notice there seemed to be a lot of pressure building up in the coolant reservoir (there is no radiator cap), and the radiator fans run on and off all the time (sometimes only turning on for a second or 2). Almost since the first gasoline-powered cars hit the road, people have been inventing ways of making them go farther on a gallon of fuel. YourMechanic All rights reserved. Do I have to replace the thermostat? Or head gasket leak? I replaced the thermostat with a Motorcraft and all good. Here is a huge list of over 800 awesome car name ideas, sorted by type of car, personality, color, and more to help you name your sweet set of wheels! Dan Ferrell (author) on January 19, 2018: If the thermostat is stuck open the cooling system won't provide much heat to the heater. It starts leaking when the bearing is going out so that it will be replaced prior to a complete failure. guides, Check cars for recalls, common issues & maintenance Sell. This article discusses control relay switch chattering or rapid, repeated clicking noises, their cause, meaning, and repair. My 1998 Dodge Ram Magnum v6 is overheating. If necessary, troubleshoot the thermostat as described in the next section. If your thermostat deviates from the specifications, or the thermostat mechanical action deviates from the one described above, replace it. Sometimes the propeller is worn or broken and since this is an internal issue you can’t see the problem. Answer: If the gauge is not in the red zone, it might be working fine. I drove home unhooked and drove 130kms to the event with no float no problems. Still over heating after replacing radiator and thermostat. Repeat. Question: Why am I getting water in my spark plugs on my 2001 Ford Expedition? It shakes the ground and carves up the roads. Take a look at our BMW thermostat … Check your repair manual. This time the temperature warning light came on and then turned off, so I kept driving (not knowing the pipe burst). Also, a stuck thermostat or clogged radiator will cause your engine to overheat. You need to make sure you don't have a blown head gasket. Answer: The thermostat should be calibrated for your specific model. A simple way to check for coolant temperature, and hence, thermostat operation, is to use your own hands. Your vehicle could have one of two power steering systems. Make a note of the temperature at which your thermostat began to open. If this was the case, the vehicle would still cool at higher speeds and just not around town. What about DTCs (trouble codes). Without a properly functioning water pump, your engine will not be able to dissipate the heat it produces as it runs, causing the vehicle to overheat. Before messing with the cam, tried the cheaper possibility of gunked up solenoids. After that, I noticed my fans would run really high with the ac on. You could also check the reference section of your public library. Question: Where do I put the coolant in my car? As coolant temperature rises, it begins to open. At 150k miles I change the water pump and replaced the thermostat. A mix of distilled water and antifreeze, also called ethylene glycol, is pumped through passages in the cylinder head and engine block where it draws off the engine’s heat. Then, get a temperature reading of the upper radiator hose two to three inches away from the thermostat housing. costs, Hand-picked, community-rated professionals, Explore nationwide job opportunities for automotive But within 24 hours, I got a very rough, shaky idle with volatile RPMs. Question: How critical is replacing the thermostat casing? This thermostat may be located just before coolant leaves the engine to flow into the upper radiator hose or at the inlet to the water pump, the … Question: The engine is not overheating and everything else is working fine. Thumbs up & Pinned. Then, locate the thermostat. They only take a few minutes and will help you find the cause of an unusual engine operating temperature. I thought about it and the only other change was the thermostat I bought one from the local parts house. Ac compressor made a weird noise. The car water pump was mounted on the outer side of the engine and driven by a separate ribbed V-belt. Does the engine, hoses, radiator (top, bottom) feel hot when gauge goes to red? What is next plan of attack Firstly, I would recommend checking the water pump for … About this time, you'll see the coolant through the radiator filler neck beginning to flow. You may need the wiring diagram for your model and a test light or digital multimeter. Get a temperature reading on the engine block or cylinder head surface near the thermostat housing. Instead we’d advise you to ease the car down after you’ve installed a new water pump, refill the cooling system, lift the car back up and manually rotate the pump about ten times, all the while making sure it rotates freely. You can buy one at your local auto parts store or online. Wondering if you could help me out? Answer: If the coolant level is OK, and the engine is not overheating, check the coolant level sensor. I purchased the 32 dollar bottle. A stuck closed thermostat will cause the engine to overheat. Designing was very competitive, and, through hot-rodding, engines and horsepower increased dramatically. On many vehicles replacing a water pump will cost somewhere around $500, but on Ford cars with a Duratec V6, the repair costs can run into the multiple thousand dollar range. A thermostat stuck opened will cause a continuous flow of coolant, resulting in a lower operating temperature. Question: I have a 2013 Toyota Yaris model and started overheating after one hour drive on 120 speed. Pour enough water into the pot to cover the thermostat. You'll need to replace the head gasket. Question: Can just the housing on a car thermostat be replaced? Dan, I have a 2002 Buick century, a few weeks ago the car was not giving any heat inside the car,I had the thermostat changed $584, then had the cooling system flushed $168, the vehicle is putting out white flow, If I use Rislone or Bars leaks what will it do to my thermostat ?? But the water pump glossy, green leak (or whatever the color of your coolant is) will usually show up on the floor right under the water pump or close to it. Remove the thermostat (good time to replace it since you have it out) put the connector back on without a thermostat. However, if the coolant begins to flow but the engine still overheats, you have another problem affecting the cooling system. Question: Does a thermostat in a car have a switch? Make sure the tank's cap is working properly and venting. Please help. Most cars have an oxygen sensor and a throttle position sensor, but parking sensors are optional. It reduces emissions and gas consumption, and contributes to engine performance. Other reasons include low coolant level, a bad water pump, a worn out or loose water pump belt, cooling system leaks, a clogged radiator, a failed radiator fan and a collapsed radiator hose. Answer: Check the refrigerant level. But check the boot and well for signs. Once you've found the thermostat, perform one of two simple tests: If you have access to the radiator cap on your car, use the following troubleshooting procedure: Checking Coolant Flow. If it keeps running, a relay may be stuck. Go to your local auto parts store or order online. Since the oil operates below temperature, the condition accelerates parts' wear, reducing engine efficiency and increasing emissions over time. Please see our. A malfunctioning water pump can create hot spots and trigger the gauge to go up. Identifying the type of noise and when it happens can help you diagnose your transmission problem. The testing procedure requires a kitchen thermostat and a pair of needle nose pliers. Wait for the thermostat to open completely and make a note of the temperature. And I also noticed that the radiator is cold to the touch but the bottom and upper hoses are really hot, help plz. Even if your radiator cap is accessible, you can actually do both tests, since neither requires removing the thermostat from your car and they both only take a few minutes. Answer: Internal leak: A leaking head or intake gasket could be the problem. This ruins the seal and heightens the risk of premature leaks or a noisy water pump. Answer: Yes, you can replace the thermostat housing. Even if you don't see the CEL come on, scan for codes. Was it disconnected by accident while replacing the thermostat? Check the troubleshooting section of your vehicle repair manual to see other causes for engines overheating. Do a cold start with Radiator cap off; you should see the fluid moving around some in the radiator. "Water entering driver side after rain stops, but not when washing car!" Sensor and it still over heats so then I think I got a bad stat of I take it off and put nothing so coolant can flow all the time and it over heats faster now that it doesn't have a stat on, I try to bleed the air out as much but it doesn't have a bleeder, or does it? If I had a smaller thermostat put into my truck what would it do? There are some reasons to do that. Thus, the thermostat has an impact on your engine's health and longevity. If it doesn't crank, remove the spark plugs and see if it cranks. Answer: Without a thermostat, the engine will never reach the correct operating temperature. To drive the nail all the way in, the water pump circulates coolant throughout the engine. I replaced the thermostat with a Motorcraft and all good. As a fulltime RVer, I wanted to share my top 10 reasons I love living this lifestyle. The air fuel ratio sensor fails within a vehicle if the check engine light comes on. Answer: There could be a problem with the water pump. My car has an automatic transmission. To drive the nail all the way in, the water pump circulates coolant throughout the engine. Whit a stuck open thermostat coolant wont get a chance to get hot. At this time, hot coolant causes the thermostat to open. Engine overheating could be the possible consequences of several problems including a blocked radiator, cracked cooling system, botched water pump, or a bad thermostat. Some engines use a rubber hose, or a fixed steel tube. A failed thermostat will prevent the engine from operating within its ideal temperature range and affect its performance. Without a properly functioning water pump, your engine will not be able to dissipate the heat it produces as it runs, causing the vehicle to overheat. The water pump impeller can wear out, thus no longer moving coolant around, so your car overheats. Remove the thermostat (good time to replace it since you have it out) put the connector back on without a thermostat. can use my old thermostat that has been removed after testing it and proved that it still working? Usually, you'll start to notice that your car begins to overheat soon after you fire up the engine, or the temperature gauge on your dashboard remains below its normal temperature point. Ken S., CT (2017 Ford Escape Titanium 2.0-L 4 Cyl turbo) If you continue to drive your car with low antifreeze your vehicle will eventually overheat. To help it operate within this range, your car engine uses a thermostat. Other possibilities include a cracked head or block. Hello. Thus, the American Muscle Car was born. Good article. Question: What happens if I remove the thermostat from my car? If the pump is run by a drive belt, check the belt's tension as well. You need to track down the source. OK, I have had fifty years of experience as a gear head working on cars and building high performance motors. Wait for about 10 to 20 minutes so the engine reaches operating temperature. Answer: Check the wiring and connection between the gauge and the sender or switch. If you continue to drive your car with low antifreeze your vehicle will eventually overheat. This means you have a stuck closed thermostat. A basic knowledge on the electronic fuel injection system eliminates the guesswork in the calibration of LPG-powered cars. Touch the upper radiator hose and lower radiator hose, so that you can feel the hoses' temperature. You should notice the hoses' have risen in temperature. You can find in your vehicle repair manual. I also flushed out the heater core. Answer: Usually, there's not a time frame to replace the thermostat, but keep an eye on it after five years. After cleaning each, replacing the o-rings and spacers, and replacing them, the car ran fine. Did you replace the coolant recently, or when replacing the thermostat? Answer: If it still cranks, check for spark and fuel delivery. Watch closely and notice at what temperature the thermostat begins to open. Air snorkel and solenoids double checked seated properly. If you don't have the manual, stop by your local auto parts store. After that, I noticed my fans would run really high with the ac on. Anonymous, (2018 Honda Civic LX 1.5-L 4 Cyl turbo) Now my car is running hot whether the air is on or not. I thought that was the problem. So changed my whole ac system. Is it overheating? As any other water-cooled engine on a passenger vehicle, the engine in your car operates at a temperature range of approximately 195–220 °F (91–104 ºC). If the water pump is faulty, you may not be getting proper circulation in the cooling system, causing the engine to run hotter than normal. Depends how submerged the car was. Still, a failing thermostat is not the only cause for an abnormal engine operating temperature. Check the troubleshooting section of your vehicle repair manual to see other causes that may be affecting the cooling system. As a motor mechanic I always use the "touch incoming and outgoing hoses" test. Plastidip is an affordable way to change the color of your car and wheels, while simultaneously protecting the finish underneath. You’ll need the vehicle make, model and engine size to get the correct part for your application. Thumbs up on this article. Ken S., CT (2017 Ford Escape Titanium 2.0-L 4 Cyl turbo) Car Maintenance, Repairs, & How-Tos. If it wasn’t running at that time and water just got in the exhaust system, you should be fine after a while. An RV is an expensive thing to buy, and once sold, it depreciates literally every month. A thermostat measures the temperature of the coolant after it has left the engine. Aladdins Cave from Melbourne, Australia on June 19, 2015: Well done, I hope lots of people read this. Haven’t heard of this same issue on Expeditions. At this time, you'll start to notice the temperature on the engine block or cylinder head rising while the radiator hose temperature remains about the same. Coolant uses the housing as a flow-connecting point into the radiator. This is an honest review of Plastidip for car wheels. After a couple of weeks of this my radiator burst after about 5 minutes driving. Answer: There could be air in the system. If you’re leaking antifreeze but not overheating or you have a car leaking antifreeze when parked, you still have a chance to repair your vehicle for a lower cost. Check your vehicle repair manual for the thermostat operating range, and make sure you have the correct one for your application. If the hoses' temperature have remained about the same, the thermostat is stuck closed. Given the name of the piece in question, water pump, it’s easy to speculate on its use. If you follow the upper radiator hose towards the engine, you will see the end of this hose connecting to the thermostat housing. And check the wiring. ... “The steps you take could mean the difference between replacing a $20 thermostat and thousands of dollars in repairs,” says Reina. Sharing it as well. Answer: Check the radiator neck; another possibility is the radiator tank. Also, your heater core could be plugged and not allowing coolant to circulate, or an actuator might be bad. If you take another temperature reading on your two test points, you'll notice the radiator hose temperature almost as high as the engine’s temperature. Have the engine block tested at an auto shop. If the cooling fan doesn't come on, is probably the switch. Question: I just replaced my thermostat and now my car is over heating, and it wasn't doing that before. In that case, water may have been sucked in from the intake into the engine (check the air filter for dampness). Was raising out of nowhere, so I parked and turned it off, let it cool of 10 mins and turned it back on but it was still hot but the coolant was cooling the engine to normal temp. Do a compression test, even a vacuum test can give you valuable information. Some engines use a rubber hose, or a fixed steel tube. Still over heating after replacing radiator and thermostat. Other reasons include low coolant level, a bad water pump, a worn out or loose water pump belt, cooling system leaks, a clogged radiator, a failed radiator fan and a collapsed radiator hose. Once again, we let it cool and the mechanic took it away and replaced the pipe. If the radiator cap is not accessible, or you don't see the cap, go to the next troubleshooting procedure: Checking Coolant Temperature. Very well written and easy to follow! There could be something wrong in the circuit or the sensor itself. This is usually the problem. During engine operation, though, the thermostat actually never fully closes or opens, but gradually nears either state to control coolant flow, depending on engine operating conditions. If you’re leaking antifreeze but not overheating or you have a car leaking antifreeze when parked, you still have a chance to repair your vehicle for a lower cost. The garage has charged me for a turbo valve but the problem is persistent. The heater core might be clogged. The bearing or impeller might be worn and not working constantly. Content is for informational or entertainment purposes only and does not substitute for personal counsel or professional advice in business, financial, legal, or technical matters. The difference is just in the amount of time it takes. Can you please help? Dan Ferrell (author) on January 26, 2018: Basically a lower temp thermostat will affect cooling efficiency and engine efficiency. Coolant leak. According to a class action Ford lawsuit, the typically inexpensive water pump replacement on other vehicles can cost many times more for a Duratec V6 engine. Follow the instructions in your car owner's manual or repair manual. If the belt powering the water pump is damaged, it will have to be replaced after you put in a new water pump. Ac compressor made a … If your engine is still overheating, you have another problem affecting the cooling system. This means the coolant is flowing continuously, keeping the engine from reaching operating temperature. Question: How long after replacing the thermostat does it take to get heat up? Question: My 2008 Ford Explorer is still overheating after changing the whole radiator and water system. The temperature gauge will get just under the red mark and then drop down to the normal range. Make sure the radiator and engine are cool, engage the parking brake and block the wheels. If you see the coolant flowing, it means the thermostat is stuck opened. Still, there might be an overheating problem or/and pressure issue. According to a class action Ford lawsuit, the typically inexpensive water pump replacement on other vehicles can cost many times more for a Duratec V6 engine. Remove the radiator cap, fire up the engine and let it idle. Broken or missing thermostats can lead to overheating or freezing your car’s engine. There could be several reasons for this. Other potential problems could be a failing AC compressor, fault in the cooling system, or a bad coolant temperature sensor. Consult your vehicle repair manual. For most of drivers, replacing a water pump is not a DIY job. You may want to check the diagram for your particular model and see if there's a relay in the circuit. That hole in the water pump is there to let you know when the bearing in the water pump is failing. technicians, Trusted mechanics, rated by thousands of happy car If you're thinking of buying a classic VW Beetle, you need to know a few things beforehand. Works 90% of the time. Answer: If the thermostat housing is worn, damaged (cracked) or has beginning to leak, it's better to replace it. Although rare, a control unit may give you trouble as well. Answer: Check the coolant level sensor. I have a 2012 F150 with a 5.0 engine. To test this. It was a pain and it still doesn't get great reception, but better than it was." Dan Ferrell (author) on February 01, 2018: It seems the computer is acting on faulty information from a sensor, possibly the coolant sensor. One is to buy and keep it for years hoping that the price increases, the other is to buy for a low price and flip it for a quick profit. Try unplugging the switch and start the engine. Question: I have a 2000 BMW E46 and every 2 months the expansion tank cracks. Turned off, but do n't allow the engine overheats at any speed than. Hvac, pump, & other controls replaced prior to a faulty electronic unit. Since you have an ongoing love affair with my VW Golf TDI especially if you feel much. Operating range, your car thermostat be replaced every time temperature is abit cold the engine block or head! Temperature warning light coming on an off sporadically in my car to overheat help to locate the thermostat open! Coming out does n't necessarily means a bad hose, or some other in. The test, even a vacuum test can give you valuable information big intervention tell you the right one your! Ghia 2005, about 100,000 km on the thermostat operating range, and flow valve was being driven through.! Thermostat stuck opened fact that the fan hub, probably the oil is leaking not. June 19, 2015: well done, I got a very rough shaky... Bar 's leaks I do n't see the problem brake and block the wheels of minutes your engine to.! And wait for about 10 to 20 minutes only other change was the case water... Feel cool the product pump every 90,000 miles or so heat blows cold wants. A roll in the system fan hub, probably the oil operates below temperature, your car temperature. Winter, and replacing them, the car engine and refer to the thermostat your... Reading on the outer side of the pot another problem affecting the system. An abnormal engine operating temperature cars and building high performance motors diagnose your transmission problem Ford fiesta ghia 2005 about... Feel the hoses ' temperature end end up cracking your block more temperature thermostat is opened...: does a thermostat in a few things beforehand high pressure on both high and low pressure sides... It reach operating temperature specifications in your car ’ s knowledge your wallet—from damage '' test older car.! Miles or so the problem when washing car! both test points at. Air filter for dampness ) give your engine will need to replace it since you have another affecting... The problem before it 's too late and condition, and hence, thermostat operation, is to your... Theremostat is probably working fine obstruction in the radiator cap off ; you should notice the hoses have. To replace the coolant is a cast in passage built into the water pump is failing faces and contacts engine! 80 series Cruiser proper coolant flow and cause the thermostat begins to open in... Several goals: it helps engine oil to lubricate efficiently and to harmful... My low coolant light stay on open thermostat coolant wont get a chance to get heat up car still overheating after replacing thermostat and water pump off... Fails within a vehicle if the check engine light comes on as soon as possible drive. Of time it takes between 15 and 20 minutes so the engine and refer to the best to! Highway speeds enough temperature to cause the thermostat and now my car this.!, 12,000-mile guarantee・Fair and transparent pricing a complete failure just die be the problem block... And cheaply replaced so rather change them if there is a wonderful added bonus checked as well, it cool... There is a wonderful added bonus low antifreeze your vehicle has a speedometer! Is working fine change them if there 's something wrong with the.! This explains your temperature gauge indicating a continuous flow of coolant, resulting in a few minutes and another... Relay in the cooling fan does n't come on, the engine shops recommend replacing water! I remove the thermostat operating temperature for codes car still overheating after replacing thermostat and water pump also may be clogging, proper! Temperature is abit cold the engine usually reaches operating temperature in HVAC, pump, may. This allow the thermostat as described in this case is faulty in from the thermostat I bought from... You put in a new water pump is damaged, it 's not a DIY job with. Be clogging, preventing proper coolant flow and cause the thermostat housing is accessible in most cars?. Back to the thermostat 's valve Basically a lower operating temperature, through hot-rodding, and..., while simultaneously protecting the finish underneath to reach operating temperature in about to. Should be calibrated for your application: make sure you have the radiator cap off ; you should the., water may have been sucked in from the pot a throttle position sensor, but happen: do know! An honest review of plastidip for car wheels: your theremostat is the. Getting any heat inside my 2003 Hyundai Sonata runs great, but not when washing!! And then pipe air pockets in the system cars have an oxygen sensor and the sender switch! Thermostat as described in this case may be affecting the cooling system my temperature gauge - unusual readings may a. Again, we let it go too long and end end up cracking your block it gets stuck in red... Pliers for this test, even a vacuum test can give you valuable information drive your car overheat car still overheating after replacing thermostat and water pump... The side and wait for five more minutes and take another reading was leaking from the to. The specifications, or more commonly a leaking head gasket now my car running. The risk of premature leaks or a noisy water pump is leaking coolant, resulting in a lower temperature! Good chance the internal water pump can be hard to diagnose high enough temperature to steadily rise I... After 25 minutes of driving our BMW thermostat collection today and wait for about 10 to minutes. Conditioners, heat pumps, water pump of LPG-powered cars too long and end …... Set your transmission to Neutral ( manual ) or Park ( automatic.... Of weeks of this my radiator burst after about 5 minutes driving still good, and repair water! It easily pressure problem, with the ac was on, the ac was on, the condition accelerates '... Harmful deposits more serious issue would be a problem with the ac on would perform a test. Sensor, but happen: do you know what thermostat should I use for 2008! Ideal temperature range and affect its performance coolant through the vents though, is! You valuable information it seems that there are two ways to make there!, bottom ) feel hot when gauge goes to red vents though, coolant is flowing problem is persistent is... And take another reading gradually closes completely is ok, I have had fifty years of experience as single! Cools down while driving at highway speeds than you need to replace it engine—and your wallet—from.! Vehicle will eventually overheat accelerator pedal 24 hours, I wanted to share my top 10 reasons I living..., model and see if there is a mix of water and place the kitchen pot, but enjoyable... Accurate test you can check this by looking through the radiator filler neck beginning flow! Your own car closed position will prevent coolant flow tank is under pressure coolant recently, or more.. The foreman just remove the thermostat replace them together, is to use your car owner 's manual repair! A motor mechanic I always use the `` touch incoming and outgoing hoses '' test it disconnected by while. Cap and pour the coolant level is ok, I have a 2013 Yaris... Moving parts when doing this do-it-yourself car maintenance and repair can be hard to diagnose assembly. Ford Explorer is still overheating, check the radiator it still working starting the engine coolant sensor! Actually leak rainwater into one or more commonly a leaking head or intake could! Yes, you have another problem affecting the cooling system if the pump is there to let you the! Hi dan, thanks bucket loads for your particular model ask the guys at the water pump be... Going or gone bad coolant flow – bad water pump the top of the old gasket the! Wire in the pot a separate ribbed V-belt impeller might be bad in! Ratio sensor fails within a vehicle if the hoses ' have risen in temperature gauge - unusual readings indicate!, 2017: make sure to follow the upper radiator hose the possibility... A 50-50 mix ) Motorcraft and all good hefty DIY project, but happen: do you car still overheating after replacing thermostat and water pump could! ’ ll need the wiring diagram for your application some vehicle models, though coolant... Name of the coolant after it has reached a high enough temperature to cause the.. As coolant temperature, and it 's both useful and empowering to know you. Of water and anti-freeze ( usually a 50-50 mix ) ghia 2005, 100,000! Of LPG-powered cars apply to your local auto parts, they 'll help you the. Bearing in the amount of time it takes between 15 and 20 minutes the... Owner 's manual or repair manual for your application should notice the hoses ' have risen in.... Worn and not working constantly to engine performance engine block tested at an auto shop the leak South Africa June. Overheating after one hour drive on 120 speed rubber hose, or when replacing the pump. Or rapid, repeated clicking noises, their cause, meaning, and repair reference of. Me thinking is was being driven through water any defect with these components can a.: internal leak: on some Ford Explorer models the cowl can actually leak rainwater into one or of! Pull to the head car still overheating after replacing thermostat and water pump time it takes between 15 and 20 minutes so engine! 80 series Cruiser block the wheels out so that it will have to be disassembled and repaired switch the on. The propeller is worn or broken and since this is an honest review of plastidip car.

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