Question about 2002 Land Rover Freelander

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Coolant fan The coolant fan is not working to keep the engine cooled. causing the engine to over heat how do I trouble shoot for the problem. It appears to be electrical at this time how would I fix this

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Check to be sure the lower hose is hot and you have good heat when this happens, if not your thermostat is stuck change this. if its hot there is a fan themo switch located on the radiator that may be suspect please advise good luck -jeff be sure to rate this !

Posted on Sep 05, 2008

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Why is the temperature light keep coming on and the gauge keep going up and down?


Temperature Warning Light is on Inspection Service How this system works: With the exception of older, air-cooled vehicles, cars rely on a liquid called coolant (or antifreeze) to keep the engine at an optimal temperature. Coolant is a mixture of water and ethylene glycol, and it circulates around the engine block and absorbs excess heat, which keeps the engine from overheating. The coolant converts that heat to air in the radiator, and then the air is emitted, at which time the coolant is ready to absorb more heat. Without coolant, the engine would quickly ruin itself with its own heat production. Common reasons for this to happen:
  • Coolant is low or weak: The most common culprit when an engine overheats is low or weak coolant. If your car doesn't have enough coolant, then it can't absorb enough heat. While your car will naturally lose small amounts of coolant over the years, a leak is the most likely cause of low coolant levels.The proper ratio of coolant to water can also get distorted, resulting in a problem. Too little or even too much antifreeze can dramatically lower the boiling point of the coolant. A proper ratio of antifreeze to water is 50/50 to 60/40, depending on the vehicle.
  • Broken radiator fan shroud: The radiator fan shroud directs the airflow across the radiator so the air can absorb the coolant's heat. When the fan shroud breaks or becomes dislodged, air fails to enter the radiator, and the coolant will no longer have a place to direct the transfer of heat.
  • Broken or missing air dam: Along with the shroud, some vehicles have an air dam (or deflector) underneath the vehicle. If this is broken or missing then the air can pass underneath the vehicle but not also through the radiator, which will cause overheating. These air dams are essential in newer vehicles, as they force the air through the fan shroud.
  • Faulty coolant temperature sensor: The temperature sensor takes constant readings of the coolant temperature and sends that information to the engine control unit. Based on the temperature of the coolant, the engine control unit adjusts the ignition timing, the fuel injector pulse, and the operation of the electric cooling fan.
  • Bad water pump: The water pump is responsible for keeping the coolant cycling throughout the engine. After the coolant transfers its heat energy to the air, the water pump recirculates it around the engine so that it can absorb more heat. The most common water pump problems are a leaking pump, bad bearings, or an impeller that has rotted away due to a low coolant ratio.
  • Stuck thermostat: The thermostat acts as a dam for the coolant. When the engine first turns on, and it is still cold, the thermostat keeps the coolant from circulating, which allows the engine to warm up as quickly as possible. Once the engine has reached its operating temperature, the thermostat opens and allows the coolant to circulate. A stuck thermometer may stay permanently sealed and therefore keep the coolant from reaching the engine block.
  • The thermostat may also stick open. This will not usually result in overheating, but it will waste gas.
  • Broken engine cooling fan: The engine has a cooling fan that is deployed when the coolant needs some extra help. When the coolant temperature sensor notices that the coolant temperature is getting too high, the engine control unit (on newer vehicles) will initiate the cooling fan to reduce the temperature.
  • Broken thermostatic fan clutch: Older vehicles use a thermostatic fan clutch to engage the engine cooling fan, which is mounted to the fan blades. The fan clutch uses a bi-metallic spring that tightens when the temperature increases. This acts as a "high speed" option for the fan, and when engaged, it draws more air across the radiator.
  • Blown head gasket: The head gaskets sit between the engine block and the cylinder heads, and keep coolant from entering the engine's oil and combustion chamber. When a gasket blows and coolant seeps in, the issue is not only that the engine will overheat, but also that damage may be done to the catalytic converter and oxygen sensors due to contamination from the coolant. What to expect: A top-rated mobile mechanic will come to your home or office to determine the cause of the temperature warning light turning on and the source of the overheating, and will then provide a detailed inspection report that includes the scope and cost of the necessary repairs. How important is this service? An overheating engine is extremely dangerous. It is not safe to drive a vehicle with an overheating engine, or you may ruin the engine completely and put yourself at risk. As soon as you notice the light come on, pull over. If there is no place to safely pull over, turn off your radio and other electrical units, and turn your heat on high (this will funnel some of the hot engine air into the cabin). As soon as you can safely pull over, do so, and then book one of our mechanics to perform an inspection.

Sep 30, 2016 | 2008 Pontiac G6

2 Answers

Cooling fan is acting strange car is heating some when idling how can I trouble shoot or fix


It is normal for a temperature gauge to fluctuate when the car idles, you will notice 20 to 50 degrees bounce. As long as it is not going into the red or blowing steam don't worry about it.

Oct 26, 2015 | Cars & Trucks

4 Answers

My car is overheating because the fan is not working. Do I need to replace the fan, change the coolant fuse, or run a wire so that my fan can come on?


Give the fan a direct 12v and ground with jumper wires. If it works prob just a relay if not prob needs a fan.

Mar 08, 2015 | 2001 Chevrolet Cavalier

1 Answer

2000 triumph tt600 radiator cooling fan doesn't come on I've tested the fan and it works , all the wires to the fan look ok anyone any ideas


Yes, the thermostat. I don't know exactly where yours is - but the thermostat is usually on the engine near a radiator hose. When cool, it stays closed to heat the coolant in the engine block and keeping hot coolant in the radiator to be cooled. Once the engine has heated the coolant to 185 ~ 200 degrees, the thermostat opens and allows the hot coolant from the engine to enter the radiator - which forces the colder coolant out and into the engine block - to keep it from over heating.

Your thermostat may be stuck - keeping it from opening / opening fully. You can test it be removing it and dropping it into a pot of boiling water on your stove - it should open in water that hot.

Do not work on the thermostat, radiator or coolant while the engine is hot. Opening the cooling system may result in spilling coolant and making a mess if you are unprepared for it.

Jun 12, 2014 | Cars & Trucks

1 Answer

My pajero is overheating afew minutes after starting what could be the cause?


An overheating engine is more than a bummer, it can be an expensive engine killer that will leave you on the side of the road, then on to the repair shop for an expensive repair bill. If your car has been running hot, you know the feeling. You're sitting in traffic, the light turns green, and you pray that traffic breaks enough for you to get some air flowing over the radiator so that engine temperature needle will go down just a little bit. It's beyond stressful, and there's no reason you should be forced to endure this. The fact is, there are only a few things that commonly cause an engine to overheat regularly. 1. Low Coolant 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. No amount of running the heater in the summer will help if you don't have enough coolant in the radiator to transfer that heat. By far, the first thing you should do if your engine seems to be running hot is check your coolant level. 2. Electric Cooling Fan Failure If you have an electric cooling fan that isn't coming on, this can cause your engine to overheat. The electric cooling fan draws cooler air through your radiator when your car isn't going fast enough to ram it through from the front. You can test this by letting your car idle long enough for the engine to heat up. If you've been having an overheating problem in traffic, keep an eye on your temperature gauge. When it starts creeping into the danger zone, look under the hood to see if your electric fan is running. If it's not, you'll need to figure out why. There are two usual causes to this:
2a. Bad Electric Fan: Sometimes your fan motor will just burn out and your fan won't come on at all. To test this, find your radiator fan switch and disconnect the wiring harness. Get a jumper wire and insert it into both contacts, your fan should come on. Another way to test the fan is to turn on the air conditioning. Most, but not all, cars activate the cooling fan at either a medium or high speed when you turn on the AC.
2b. Bad Radiator Fan Switch: There is a switch that tells your cooling fan to come on when your coolant reaches a certain temperature. The easiest way to test this switch is to disconnect the wiring harness and then run a jumper wire across the harness contacts. If the fan comes on, you need to replace the switch. 3. Thermostat Not Opening The most common symptom of a failed thermostat is overheating at highway speeds. Your engine may be able to stay cool at low speeds because it's not working that hard, and therefore not creating as much heat. But at highway speeds your engine needs lots of coolant flowing through. If the thermostat doesn't open, there isn't enough flow to keep things cool, and you'll find yourself looking more like a steam ship than a sedan going down the highway. 4. Broken Fan Belt There are still lots of engines out there which have a fan belt to drive the engine cooling fan. If you see a belt attached to your fan, you're in this club. The good news is your repair is always cheaper than the electric guys. You can replace your fan belt easily if it's broken. 5. Clogged Radiator If your car has more than 50,000 miles on it, your radiator could start getting gummed up. You can avoid this and other problems associated with old coolant by flushing rad every year.

Nov 26, 2013 | Peugeot Liberte Cars & Trucks

1 Answer

My peugeot 206 keeps cuttin out and the enguin light comes on while im driving it started off only doin it a couple times now its doin it often it seems to get hot quicker than normal 2. its ok if i am...


SOUND LIKE ENGINE OVERHEATING,CHECK COOLANT LEVEL MAKE SURE YOUR RADIATOR FULL OF ANTIFREEZE.IF YOUR COOLANT OVERFLOW JUG IS EMPTY COOLANT LEVEL IS LOW.NEED ADD MORE COOLANT TO OVERFLOW UNTIL COOLANT STAY AT FULL COLD MARK. DONT OVER FILL COOLANT OVER FLOW JUG.IF COOLANT OKAY ENGINE OVERHEATING REPLACE THERMOSTAT.MAKE SURE ENGINE COOLING FAN IS WORKING IF YOU COME TO A STOP CAR SITS FOR A LITTLE WHILE START OVERHEATING THE COOLING FAN NOT TURNING ON , BECAUSE COOLANT FAN FUSE BLOWED OR YOU HAVE BAD RELAY,THE ENGINE COOLANT TEMPERATURE SENSOR FAULTY.IF YOU HAVE THE CLUTCH TYPE COOLING FAN, MAKE SURE WHEN TURNING CLUTCH FAN WITH HAND COOLING FAN SHOULD HAVE RESISTANCE WHEN HOT.IF CLUTCH FAN FEEL WOBBLY AND LOOSE REPLACE IT.TAKE VECHICLE TO AUTO ZONE OR ADVANCE AUTO PARTS OR ANY AUTO PARTS STORES THEY WILL CODE SCAN CAR FREE AND GIVE YOU THE CHECK ENGINE LIGHT TROUBLE CODE TO SEE WHAT CAUSING CHECK ENGINE LIGHT TO TURN ON.

Jul 30, 2011 | 2005 Peugeot 405

1 Answer

Coolant sensor keeps saying bad would that cause it to over heat jeep laredo 97 grand cherokee


Yes, cause that sensor operates the electric cooling fans by the radiator, if those fans or fan don't come on, the radiator can't cool down as quick and causes the engine to run hotter.

Aug 11, 2010 | 1997 Jeep Grand Cherokee

1 Answer

The interior fan for heat and ac will not run


Your car's heater is a life saver in cold weather. Before attempting to repair your car?s heater, you should understand how your car?s heater system works. First, on this page is an explanation of how your car?s heater system functions, further down the page are some pointers on heater system trouble-shooting. To warm the passenger cabin of your car, your car?s heating system makes use of excess heat from the engine?s internal combustion process. A car?s engine, in fact, when in operation produces so much excess heat that if the excess heat is not removed, it would destroy the engine. It is your car?s cooling system that removes that dangerous excess heat. Some of an engine?s excess heat is released through the exhaust. Most of an engine?s excess heat is absorbed by a circulating liquid coolant, which is a mix of water and antifreeze. The heated liquid coolant is carried from the engine through hoses to the radiator, which transfers the heat from the coolant to the outside air. That heat transfer lowers the temperature of the liquid coolant, which is then circulated back to the engine to absorb excess heat again. Whereas the radiator is located at your car?s front grill, the unit that transfers heat to the passenger cabin is located inside the dashboard. This unit is something of a mini-radiator and is referred to as the heater core. Heated liquid coolant circulates through tubes in the heater core and a heater fan blowing across those tubes, as well as through little fins encasing the tubes, directs warm air through heating vents into your car?s passenger cabin. Because your car?s heating system works off of its cooling system, heating system malfunctions are often caused by problems in the cooling system.

Apr 07, 2010 | 2005 Volkswagen Jetta

2 Answers

My honda is over heatin why


CHECK COOLANT.IF COOLANT TOO LOW IT WILL CAUSE OVERHEATING.IF COOLANT LEVEL IS GOOD.YOUR THERMOSTAT IS STICKING CLOSED.IF ALL IS WELL.YOUR RADIATOR IS CLOGGED UP NEED FLUSHING.ENGINE BLOCK WATER PASSAGES IS STOPPED UP.LEAKING HEAD GASKET WILL CAUSE OVERHEATING. USE A SCANNER TO CHECK TO MAKE SURE COOLANT FAN IS WORKING.AND COOLANT TEMPERATURE SENSOR IS WORKING.COOLANT TEMPERATURE SENSOR IS WHAT CAUSES THE COOLANT FAN TO TURN ON AT 190 TO 200 DEGREES.IF COOLANT FAN NOT WORKING.HOT WIRE IT USING JUMPER WIRE TO BATTERY. IF FAN RUNS YOU HAVE A BAD FUSE OR RELAY.IF NOT FAN MOTOR IS FAULTY.REPLACE IT.ALSO CHECK WATER PUMP IF YOU SEE SIGNS OF ANTIFREEZE LEAKING AROUND WATER PUMP.REPLACE IT.ALSO MAKE SURE YOU HAVE 50 % WATER AND 50 % ANTIFREEZE. IN COOLANT SYSTEM TOO MUCH WATER WILL CAUSE ENGINE TO OVER HEAT.ALL OF THOSE THINGS IS POSSIBLE CAUSES THAT WILL CAUSE YOUR CAR TO OVER HEAT.

Nov 08, 2009 | 1992 Honda Accord

1 Answer

I have a 03 silverado 1500 5.3 that is very tempromental. it keeps boiling over and overflowing the bottle. i have put a new radiator and thermostat in it. any ideas please help


MAKE SURE WATER PUMP WEEP HOLE NOT LEAKING.IF SO REPLACE IT.MAKE SURE YOU HAVE 50/50 MIXTURE OF ANTIFREEZE AND WATER.MAKE SURE YOUR COOLING FAN IS WORKING .IF YOU GOT A CLUTCH FAN IT SHOULD NOT BE LOOSE OR FREE WHEELING.IT SHOULD HAVE RESISTANCE WHEN YOU TURN IT BY HAND.IF YOU GOT ELECTRIC COOLING FANS TURN ON AC SWITCH TO SEE IF THEY COME ON IF YES FANS WORKING IF NOT COOLING FANS RELAY IS BAD.ALSO SCAN IT TO CHECK COOLANT TEMPERATURE SENSOR.TOO SEE IF MATCHING THE ENGINE COOLANT TEMP IF NOT REPLACE IT.IT WILL CAUSE YOUR COOLING FANS NOT TO COME ON AT A SET TEMPERATURE.CAUSING ENGINE TO OVER HEAT.. .

Jul 27, 2009 | 1990 GMC C1500

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