Question about 2000 Ford Taurus

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Drivers side electric fan radiator motor blows coninously until motor is turned off

3.0 litre Vulcan motor, drivers side electric radiator fan seems to blow continually after motor warms up. Does not quit until I turn the motor off then it will turn off. Additionally, the temp gauge goes up half way between C and H then back to just above C. I have changed thermostat, water pump, and flushed and back flushed whole system including flushing out heater core with by-pass clamped shut. Also, heater only blowing out warm to cool air. Checked out AC/heater blender door actuator door motor and seems to be working. Gears for the blender door are tight and appears door is OK as well?

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  • Ford Master
  • 2,553 Answers

The temp sensor to the fan motor is shorted out replace it.

Posted on May 03, 2017

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6ya6ya
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Posted on Jan 02, 2017

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mosthated357
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SOURCE: Warm air from dash vents but cool air from defrost

The system just needs to get all the air pockets out if you switched everything like you said look around where the radiator hose meets where you put the thermostat in, there should be something on the lines of a little nipple with a 8 mm bolt on it i will have to pull up the exact setup of your Taurus but its the same general concept your car is fine you just have a big air pocket , what else you can do is while its cold right now and the car isnt running is to go take the radiator cap off the radiator and see if the antifreeze is low now that the car has cold down since you last ran it. If so feel it up top it off in the radiator and it might hurp it self and remove the air pocket all on its own... If you need any more help feel free im always on here id be glad to help more in detail once you try that and look under the hood for the bleeder ( the thing with the nipple on it) Also if you could please rate me i would greatly appreciate it.

Thanks,
Steve

Posted on Jan 03, 2009

  • 3 Answers

SOURCE: 2001 FORD EXPEDITION XLT 4.6L V8 BLOWING MILD WARM

You hot air comes from the water circulated through the heater core. It is like a miniture radiator with water flowing thru it constantly. So by opening the "Blend Door" you are permitting so much of this hot air to pass thru.

Seems like for some reason your heater core is plugged up. Just like a radiator can be. So water may be passing through your heater core but not passing through fully. Your heater core gets hot from water passing throught it from the engine. Then your doors open up, in proportion to how much air is permitted to pass over the heater core.

Suggest to remove the heater core and replace it. Seems the blend doors are working properly but again, if you have a non working heater core then no air can pass over the "Hot Core" for you to recieve hot air.

If you are not mechanically inclined, then go to a local parts store and you can buy a car manual, such as Chilton's or Hane's Car manuals, for your year and make to show you how to replace it. Then you can also have it for any other problems that may arise.

Posted on Jan 24, 2010

  • 18 Answers

SOURCE: i have an 1994 ford

Does the air coming out of the vents change when you move the temperature control knob? If you can't feel it, you should be able to hear the change

Posted on Feb 13, 2011

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1 Answer

How do I fix cooling fans that run when car is off


Replace the fan relays. The Radiator Cooling Fan Motor Relay is located: Under hood, driver side, front side of strut tower, mounted in relay panel
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check the fan relays on the sides of the radiator. Check for right amount of antifreeze in radiator. Change the Thermostat (it's a pain to remove it, so you might as well change it with a new one). The driver's side radiator cooling fan should always work, and turns on-off according to engine temp. The passenger-side radiator cooling fan ONLY comes on when the A/C is running. IF it doesn't come on when the A/C is on, check the operation of the Blower motor (blows air out of your A/C vents). IF it doesn't work, check the Blower Motor RESISTOR (mounted inside the Blower Motor housing). See picture - RESISTOR is #5.
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Before you did any repairs to address your overheating problem, did you check to see if your fans were working at all ? One way to check if they are working is by starting your vehicle and turning the A/C on, they should automatically start running. If they do not, begin to perform diagnosis to that electric circuit.

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Air conditioner in my 2004 volkwagon passat blows cool for a few minutes than blows warm. I had dyed ran through for leakes, recharged and filled with freon and that didn't seem to fix it. Help


You need to check and see if the cooling fan (electric) on the radiator is coming on. If this fan does not come on the high side pressure will go over 400psi and turn off the compressor until the press. drops. either the cooling fan motor is bad, the cooling fan relay or the fuse for the cooling fan relay. you can check the cooling fan by removing the cover of the power steering reservoir and pulling the wiring harness out from under the bracket. the fan has two wires in its connector, one red and one brown (there may be a tracer color on either one) these two wires are heavy gauge, like #10. unplug the harness and feed power to the connector on the fan side and see if its spins. If it works your problem is probably the fuse or relay. If it doesn't it may be seized or stuck or burned out. Reed, Aquidenck Motors

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1 Answer

I turned on the ac and the light does not work, the vents are not blowing and the car is running hot. I have a saturn SL 1996


First check the 15 amp HVAC fuse located in the main fuse block inside the car on the passenger side of the center console, under a cover. If the fuse is good, then the problem may either be the HVAC blower switch (which is the fan blower selector switch), the fan blower motor resistor, or the fan blower motor. An auto repair manual will explain and illustrate for you the steps on how to check each of these components.

Even after pushing the ac light switch on, the fan blower selector switch has to be turned on as well (working) because it provides an electrical path to the positive side of the battery to complete the circuit and turn the ac light on. What the ac light switch does is provide the electrical path for the ac compressor clutch to come on through the ac control relay which is controlled by the car's PCM(computer) when you want ac, but the ac light switch still needs to run through the fan blower selector switch to receive its power. You can turn on the fan without the ac light switch because it gets its ground path(negative) from the blower motor. So the blower motor has to work in order to provide a ground path for the fan blower selector switch to be functional. You could have a faulty blower motor which is why no air blows through the vents. The fan blower motor is located inside the car on the passenger side underneath the dash at the bottom end of the glove compartment box. You'll see it. It's right above where a person rests their feet on the floor. Therefore, if your 15 amp HVAC fuse is good, check to see if you have voltage at the blower motor connector. Unclip the connector and with the ignition on and the fan blower switch moved to any one of the first 3 selections, check for voltage using a multimeter. The voltage will vary because there is a blower motor resistor. Voltage should be higher on setting 3 than 1. If you do have voltage at the blower motor connector, check for a faulty blower motor. The auto repair manual will tell you how to do it using jumper wires.

It's normal that your car is running hot because the radiator fan works in conjunction with your ac compressor. If the ac is on, the radiator fan will be on and therefore the engine coolant temperature will stay in it's normal operating range. If the ac is off, the radiator fan will stay off as well and the engine coolant temperature gauge will begin to rise and show pretty hot (especially at idle). It will do this up until a certain degree then the radiator fan should turn on thermostatically and stabilize the temperature. It's scary and I know what your saying because it does that to my car if my ac isn't on. Don't worry it won't overheat.

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2 Answers

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if you have power there then the fuses are good or relays but if you have power then you ethier have a bad fan or ground wire also that fan should only come on when the ac is on

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1 Answer

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sounds like it could be your radiator could be slightly plugged or rear dirty on the outside causing very little airflow over a period this will cause an overheat .do this car have an electric radiator fan ? and when motor os hot or even over heating the electric fan motor should be spinning until cooler if no repair that. are you loosing coolant ? after a long hot drive put your hand on the front side of the rad with the motor off and feel the center of the rad then put your hand on the corners see if there is a differance if there is the rad is plugged try to flush it or replace rad and thermostat ok

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