Question about 1988 Toyota Camry

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Over heating The fans on the radiator will not come on after the engine is running hot.The fans will come on when I turn on the A C.

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Check fan thermostatic switch. Could be in the radiator or by the upper radiator hose on the engine. The thermostatic switch is what turns the fans on when the engine gets hot.Fans are supposed to come on when the A\C is on.

Posted on Jun 18, 2008

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Overheating when I sit idle.


Over heating the engine is a serious concern. With the hood raised you should hear the motorized fan turn on just behind the radiator as the engine requires additional cooling.. If you look in from the rear of the radiator you should see the fan blades.

This electric powered motor operates on a thermostat and when the engine temperature rises this fan should come on. I'm assuming from your description that when driving and air is flowing through the radiator as the car travels the engine is nor overheating.

Check fan motor thermostat, check fan motor and check wiring.

Wiring Diagrams related to the Honda Civic
http://www.wiringdiagrams21.com/category/automotive/honda-automotive/civic

Motor engine cooling fan only runs as engine temperature requires additional cooling.
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Jan 05, 2016 | 2001 Honda Civic

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2007 nissan exterra overheats


Hi Kim,

I can feel your frustration. It sounds like you've done all the logical stuff already. The "donut hole" in your process would seem to be not changing the water pump. The water pump as you might imagine, is responsible for circulating (pumping) the relatively cool water in the radiator into the running engine that contains the hot water. Hoses connect the two together. A thermostat is between the radiator and the engine. Once the water in the running engine gets to a certain temperature, the thermostat opens allowing the water pump to send cool water into the engine and hot water out to the radiator to be cooled. The heater core is usually on the passenger side firewall area.

It sounds like the water pump is the only thing left to change - if it isn't working - it can't circulate the water - and will result in overheating. Lastly, a clogged heater core shouldn't cause the engine to overheat - in fact, if the engine begins to overheat, you should turn the heat to HIGH fan and HIGH temperature to help remove some of the heat in the coolant.

Good luck!

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2 Answers

Cooling fan runs intermittently and causes the engine to run hot


The cooling fan isn't causing the engine to run hot, it's electrical and cannot heat an engine. It is turning on in response to your engine running hot. Check coolant level and age, if it's still running hot then check the thermostat - it could be stuck closed. If the thermostat is fine and coolant level is full, it could be partially clogged radiator or head gasket problem (a sure sign of bad head gasket is that your coolant keeps disappearing with no leaks).

Apr 02, 2014 | 1998 Lincoln Mark VIII

1 Answer

Car runs hot after being driven for awhile while sitting idle but only after it has been turned off then turned back on shortly after driving.


Have you checked your engine coolant level? It may be as simple as that, or it could be more complicated. Have you changed your serpentine belt recently? Is/are the radiator cooling fan(s) coming on when the engine heats up? If engine is hot and you turn it off, do the radiator cooling fans continue to run for a period of time? Several possibile problems and solutions here. Need more info please.

Sep 30, 2013 | 1994 Honda Accord

2 Answers

2002 Mini Cooper overheating when idling with the airconditioning on. Initially the air is cold and as the car engine temperature heats up the air conditioning gets warmer. Also, the radiator overflow cap...


Most cars have an 2 electric fans on the radiator. One will run when the coolant gets hot and the other will run when there is more cooling demand OR it will run when the AC is turned on. My guess is, the second fan is not running when your AC is. Your AC system creates heat of its own. The heat is removed through the condenser (radiator-like coil) which is usually located in front of your engine radiator. Without a fan the heat is transferred into your engine radiator causing it to over heat. This would explain why it overheats while idlling and not while driving. While driving, air is flowing through the radiator and condenser. to provide the necessary cooling. In short, check to see if both fans are running when the engine is hot and the AC is turned on.

Sep 02, 2011 | 2003 Mini Cooper

1 Answer

My engine in my 04 Sebring is running hot, andthe a/c is blowing hot air. Doesn't happen everyday. What's wrong?


Your A/C has it's own little radiator that sits right in front of your engine's water-filled radiator. Heat from your engine radiator is prolly transferring itself into the other smaller radiator and over-whelming it. When any engine is running hot, it usually turns out to be a bad themostat, bad temp-sensors (that run your electric cooling fans on the radiator (or one (or both) radiator fans have died). I would start with the thermostat since it's the cheapest....

Aug 08, 2011 | 2004 Chrysler Sebring

2 Answers

My 2002 buick century is loosing coolant fast. When car isn't running around 60-70 mph is seems to heat up more than normal and no heat or ac will occur. Should I replace the thermostat? I noticed the fan...


it sounds like one of several problems radiator needs flushed , water pump is bad or going, thermostat is bad, pin hole in one of the hoses, cracked head, hole in radiator, hole in heater core.if core is leaking you will notice water on the floor inside the car on pasenger side. if radiator has hole when you fill radiator with coolant it will leak froom fins sometimes only when hot. thermostat bad your car will read hot and or cold always. if stuck open cold, if stuck closed hot, after about 15 20 mins of running engine will cause radiator to boil over to over flow tank.never open radiator cap when engine is hot :) burn hazard.if pump is bad or going will notice gauge reads hot intermittent or always. will boil in to overflow tank. if head is cracked will notice water comming from side of engine block or in oil when you change oil. if radiator needs to be flushed will notice scale or gunk on radiator cap
(if you think you need help or do not have tools to perform please take to a machanic)

Mar 14, 2011 | 2002 Buick Century

1 Answer

2007 Pontiac G6 GT radiator fan keeps running after engine is turned off. Runs for another 4-5 mins after engine is turned off.


Heat sensor keeps blowing air thru radiator until it cools, then cuts off. Some auto do this. If it bothers you let the engine idle a few min. after you drive it and then turn car off. When you drive your car and the engine is hot it heats up even more when you turn it off because the water has quit circulating. The fan will run til it cools. It's supposed to do that.

Sep 03, 2010 | Pontiac G6 Cars & Trucks

2 Answers

Vehicle is overheating when standing still and when operated short distances. Vehicles cuts off upon reaching the red line.


first thing is to check and fill radiator to the top when the engine is cold,and fill the over flow tank to its full line,
next thing is to verify the engine is really over heating or the engine coolant temp switch is working,if the engine is over heating the ECT switch is what tells the computer to turn the fans on at the radiator,verify they are running when it reaches hot.

Jan 26, 2010 | 1995 Ford Contour

1 Answer

2001 aurora engine heats up when not moving down


Likely the fan(s) not turning on when engine gets hot. Is the check engine light on? Read the code(s) and repair as needed. Check (when cold) the fan(s) for free turning--if seem bound or hard to turn, replace the ailing fan. Check the radiator and reservoir fluid level. Watch the fans as the engine heats up. Feel the radiator area where the upper engine hose connects. It will suddenly turn hot when the thermostat opens. The fan assembly should activate somewhat after. Hopefully, the engine code recognized a defective temp sensor and was replaced.

Aug 11, 2009 | 2001 Oldsmobile Aurora

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