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When I start my 97 thunderbird the ac compressor turns on then off. Then the cooling fan turns on and then off. This cycle continues from a cold start. The ac in the car is turned off. Any solutions

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  • Contributor
  • 16 Answers

You have to check on the ac fuse if it has failed youhave to check on the wiring system

Posted on Oct 19, 2013

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Posted on Jan 02, 2017

Tech Jenkins
  • 359 Answers

SOURCE: 2001 chevy malibu- when car starts cooling fans do not come on but then do

your coolant temp sensor on the engine block is probably faulty, however, keep in mind that if it really isn't all that hot outside they may not need to turn on. Once you activate the A/C the fans come on automatically since they have to cool the condensor...

If your car is not overheating do not worry about it.

Posted on Aug 29, 2008

yotaguy
  • 232 Answers

SOURCE: The electric radiator cooling fan will not turn off

As long as the fan eventually shuts off this isn't a problem,the fan will continue to run for a bit after the car is turned off,once it reaches a set temprature it will turn off.

Posted on May 02, 2009

  • 78 Answers

SOURCE: The AC is not cooling and when I check the clutch on the compressor it isn't engaging and turning the compressor.

You must of lost freon and when there is no freon your clutch will not activate.Must check it for pressure in the lines.If there is pressure check pressure switch.Good luck let me know

Posted on May 24, 2009

  • 1 Answer

SOURCE: 88 Cadillac Deville cooling fan runs continuously

I have a 1990 Cadillac Fleetwood and the cooling fans will not shut off....what is the problem?

Posted on May 29, 2009

  • 11 Answers

SOURCE: ac compressor does not turn on when car has been sitting & it's hot outside. Works fine in the morning.

either the freon charge is about 1/3 low, or the expansion valve needs to be replaced. Freon is getting into the evaporator, but not in great enough volume to cool the air unless it is coming in cool to start with. check your ac charge, and if it is full, then have it emptied, change out the expansion valve, and recharge it

Posted on Sep 04, 2009

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1 Answer

We have a 2008 Dodge Grand Caravan. My question is: when the engine is running, does the radiator fan run constantly or intermittently?


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Cooling fan coming on when cold outside


If the vehicle is equipped with functional AC and the dash control panel is set on defrost, this will cause the AC compressor to cycle and the fan will come on. Turn the dash control to floor and see if fan comes on when cold outside. It should only come on when engine is at operating temperature and commanded to come on by the computer

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1997 ford thunderbird colling fan runs when engine is cold


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The computer grounds the relay when the fan is needed.
The fan will run anytime the ac compressor is engaged.

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Location of ac high pressure cutout switch on a 97 Plymouth voyager. Could it be a different problem? Had to replaced the PCM and a couple sensors because of a short in the wiring cluster. Now the ac...


HIGH PRESSURE CUTOFF SWITCH LOCATED ON AC COMPRESSOR DISCHARGE LINE LEADING TO THE CONDENSOR.THE HIGH PRESSURE CUTOFF SWITCH WILL CUT OFF THE AC COMPRESSOR IF SYSTEM PRESSURE RISES TO HIGH CAUSED BY RESTRICTION IN THE REFRIGERANT CIRCUIT OR OVERHEATED CONDENSOR.MAKE SURE COOLING FAN IS RUNNING WHEN THE AC SWITCH IS ON.THE COOLING FAN KEEP CONDENSOR COOL, IF COOLING FAN DONT RUN.YOUR AC WILL STOP BLOWING COLD AIR.HAVE THE REFRIGERANT SYSTEM CHECK OUT.MAKE SURE YOUR LOW SIDE PRESSURE IS 10 - 37 PSI. THE HIGH SIDE PRESSURE SHOULD BE 112 - 210 PSI. CHECK THE AC COMPRESSOR CLUTCH FUSE AND RELAY.

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Hello, Are the cooling fan(s) coming on with the truck in park and the engine at idle? If the cooling fan(s) are not working A/C will not cool with truck setting still.

Oct 02, 2010 | 2005 Saturn VUE

2 Answers

If the radiator cooling fan motor does not work. Would it keep the A/C from working.


yes , it sure can , i believe that fan works for the engine
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Aug 20, 2010 | 2000 Chevrolet Cavalier

1 Answer

My 2002 Expedition air conditioner will sometimes blow hot air and others cold air


I would check the following possibilities:
1. Is compressor clutch working? - You need to do this when the ac is blowing hot air only - locate compressor drive pulley on engine - rubber belt wraps around it. Start engine and set to max ac. When the ac is blowing hot air, look at the center of the compressor drive pulley using a good flash light - watch it for a while, it should be spinning with the pulley - this means the compressor is engaged. If not, the compressor is not engaged. If your ac is blowing hot air, then the compressor should be engaged and running (trying to cool). If it is not engaged, then your compressor clutch is probably going out. Could be low voltage to clutch, but more likely the clutch is worn out and only working some of the time. Note: if working normally, the compressor clutch will engage and disengage in cycles- but the air should always be cold. If clutch is bad, compressor would need to be replaced (sold as one unit). This is tricky to diagnose and could take some time - you need to do it when ac is blowing hot air but set to max cooling.

2. Low on refrigerant or refrigerant has moisture in it? If your ac blows cold initially after being off for a while, then heats up, and continues to regularly cycle back and forth between hot and cool air, then the system may be low on refrigerant or the refrigerant may have moisture in it that is freezing and restricting refrigerant flow. An a/c shop can check refrigerant level and even replace refrigerant if moisture is suspected.

Could be other issues, but I would start with these.

Good luck

May 07, 2010 | 1999 Ford Expedition

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Hot air comes out of defrost vent at top dash and cold air out of


Hey, what setting is your A/C on Max AC? AC? Cycling air in vehicle or taking it from outside

The car icon on the right in this image is what I'm referring to when I say cycling air in vehicle.

373a147.jpg
Also, do you ever have cold air blowing? on any setting or any speed? if not, find your A/C fan, it is smaller the the engine cooling fan, sometimes there are 2 fans together. The AC fan should be located at the front of the vehicle and is usually electrically powered.

Also try to find your compressor, looks something like this:
730c4b9.jpg

is it running? is one pipe hot and one cold? (the pipes I am referring to are inlet and outlet pipes of the A/C compressor unit.)

Hope this helps, keep me posted

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1 Answer

Replaced relay, but both electric fans won't come on


Are we talking about the cooling fans for the engine and AC condenser?? Only one cooling fan will cycle on and off during normal operation. The main cooling fan will cycle on and off as needed for cooling the engine. If you turn on the AC or select a defrost mode on your climate control then the 2nd additional fan will run usually continuously in order to condense the freon in your AC system for cooling the interior of your car and in defrost mode it helps to reduce interior moisture on the glass (defog/ defrost). If no fan comes on at any time whether the engine is hot or cold or whether you turn on the AC or not and you have already replaced a cooling fan relay and checked related fuses then either the fan /s are bad or you dont have power in or out of the fan circuit which consists of several components that would need to be checked. Let us know if you find anything else or have additional questions.

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