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I have a Mitsubishi Magna TP Series 1989-1991 the cooling fans will not start and the motor over heats. I am unable to find the heat sensor (water temperature) or the relay that controls the fans. Can you help me to locate them. Banger Cox

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  • bangercox Aug 25, 2008

    THANK YOU NUMBER ONE!!

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Under the hood you should see a black box on the driver side, this is called the power distribution box. its in there. and as far as the temp sensor, follow the top radiator hose back to the engine when it stops, look for a two wire connector this is your temp sensor

Posted on Aug 25, 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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I have a 2000 Mitsubishi eclipse and my radiator fans run from startup a few minutes after shut off.It affects heat until higher rpms.i need better heat and quicker.


Here are a couple of thoughts on this problem:

1. Just for fun and giggles, it might be a good idea to have the thermostat checked one more time. I know it is a new thermostat but you never known if a thermostat may have failed even right out of the box. It is possible that thermostat could be shot, even thought it was new. I know it is a long-shot, but it never hurts to give it a try.
2. Check the fan sensors. The Eclipse has used an electric, rather than mechanical, fan for some time. It is possible over time that the start and stop sensors can go out of tune and that they can raise your fan's run rate on starting, cruising and idling. In this case, the mechanic is right in that the higher speed is causing the coolant to be cooled off more quickly than it should and the result is that your vehicle's cooling system is causing problems for your Eclipse's heater sensors. If the sensors don't get information that the coolant flowing through their portion of the cooling system isn't the right temperature then the heater won't kick off and all that will happen is that the heater will wait until it senses the coolant is the right temperature.

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There are other things to test before we have the engine spread all over the yard. Cooling fan operation. Yes the thermostat hot air in heater just means hot water. start with a cold engine then start and run at a high idle if heats quickly upper radiator hose hot lower cold good but reverse no flow. remove and test thermostat (not replace) put on stove boil water and watch it open once center piece is moving check with thermometer it should agree with stamp number on thermostat. if good check for slipping fan belt. check for air restrictions on radiator and water flow.

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I have a 2000 lincoln continental and have recently replaced the thermostat due to over heating. after purging the coolant system the car will still 0ver heat am I not bleading the system right or is...


Provided the thermostat was put in right there are several things to check. Your engine is also air-cooled. There is a series of switches which work off of engine water temperature and the A/C setting. The electric cooling fan may have 2 speeds. If the electric fan motor or if the Relays or activation sensor do not work, the engine will not be cooled by air. The water cooling system is not good enough to do the job by itself.

The electric cooling system is fused and has a Relay.

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How to replace head gasket on 4 cylander


2.6L Engine
  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2. Drain the cooling system.
  3. Relieve the fuel system pressure.
  4. Remove or disconnect the following:
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tecnovative_96.gif
  1. To install:
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