Question about 2005 Chrysler Pacifica

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The cooling fan only work's when I have the air-conditioning on, when I put it off the motor starts to over heat, what can it be.I though it was the thermostat and I pull it out but I still have probl

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Is there a reason for the cooling fan to work when the air conditing is off? Perhaps when you have outside air coming into the cab and you want more of the outside air? Your Owner's manual may help and may provide some trouble shooting help.

Posted on May 03, 2015

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1 Answer

What is difference between on an auto on thermostate


I'm not sure exactly how this applies specifically in a car, but on a home heating and cooling (air conditioning) thermostat, it is often associated with the fan or blower setting.

If for a system fan:

"Auto On" setting in a heating / cooling system would start the fan when the temperature climbed above or dropped below the setting you on the thermostat and start the heat or cooling source. Once the thermometer indicates the desired temperature had been reached, the heating / cooling source would be stopped and the fan would turn off.

"On" would run the fan all the time, regardless if the thermostat tired to start the heat or cooling source. This would result in constant circulation of the air in the space(s) and tend to keep warm or cool spots (rooms) from being created.
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Nov 30, 2015 | Cars & Trucks

1 Answer

I found a pics of wire connected to the bolt in the left motor mount bracket what is it for


There are two fans on for air and one to keep the engine cool the engine one is not working so that wire was the ground or the power wire and needs to be fixed. The wires to both fans go to the same area near the bottom of the battery area. Follow those wires and you will find the broken one and splice a new wire in

May 06, 2015 | 2005 Chrysler Pacifica Touring

1 Answer

I am in saudiarab i have crown victoria 97 model it is working good but i have problum in air condition system when i run my car its running good no problum but when i start my air condition it is heating...


The air conditioning condenser creates a lot of heat when the a/c is on. The cooling fan is supposed to run the whole time the a/c is on to keep it cool. If the fan isn't on, the radiator will absorb this heat and cause your car to over heat. You should also check your coolant level. So, it sounds to me like your cooling fan isn't working.

Sep 13, 2011 | 1997 Ford Crown Victoria

1 Answer

Antifreeze is not circulating through radiator. Radiator is new - 2 months old. Also, no heat and fast idle.


Problem is not your radiator--unfortunate for you. It's more likely the water pump. The water pump pumps the water around through your radiator to be cooled and then through the engine block to cool your motor. Before you go tearing the water pump out though, you may want to check to see if your fan belt is in good condition and working properly because the water pump works off of the fan belt turning the pulley to pump the water around. If the fan belt is off that pulley, it may need to be put back on or re-routed correctly to start pumping the water.

Then if that is not your problem, the water pump will probably need to be replaced. I believe it can be accessed from underneath the engine compartment, but first you will have to take the tension off the fan belt and remove the belt, then loosen the bolts around the front of the water pump. Put a catch pan under the car though because all your water/antifreeze will come gushing out. That water pump should be available at your local AutoZone or another auto parts store for around $100.

Nov 17, 2010 | 2001 Chevrolet Blazer

1 Answer

Cooling fan burned up


Get a new fan motor and blade from GM or from an aftermarket supplier.

GM parts are usually better than the aftermarket ones, though for fit and functioin.

May also look into checking the relays and harness. If the terminals of the fan show they are getting current, then the motor will have to be replaced if not turning or obviously burnt.

Good luck on this repair.
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Inspect/Replace

CAUTION
The fan that draws cool air across the radiator can be driven by either a belt or electricity. Rotating fans can be dangerous. Some are controlled by an automatic switch and can start unexpectedly. When working on electric fans, keep in mind that electric cooling fans should be disconnected when working around them.
When replacing a radiator fan motor, always refer to the vehicle's service manual. The following is a general guide for cooling fan replacement.

  • Disconnect the negative battery terminal at the battery. This is necessary on vehicles using electric fans, but some vehicles may require the relocation of the charging system components.
  • Drain the cooling system.
  • Loosen or remove the hose clamps, then remove the upper and lower hoses from the radiator.
  • Disconnect the transmission cooling lines and plug them off, if equipped.
  • Disconnect the electric fan motor connector, if equipped.
  • Remove the fasteners attaching the fan module to the radiator.
  • On some vehicles equipped with air conditioning systems, it may be necessary to discharge the system. This is the case if the radiator and condenser can not be separated in the vehicle.
  • Remove the upper radiator cross member or mounts.
  • Disconnect and plug the air conditioning lines at the condenser, if needed.
  • Remove the radiator and fan module as one unit if possible.
  • Separate the fan module from the radiator.
  • If required, separate the radiator from the condenser.
  • Remove the old fan module.
  • Install the new fan module onto the radiator.
  • Reattach the fasteners attaching the fan module to the radiator.
  • If equipped, connect the electric fan motor connector.
  • Reinstall the radiator.
  • Refill the cooling system.

Oct 29, 2010 | 1997 Chevrolet Cavalier

1 Answer

The cooling fan is running slow and the air conditioning is not working properly in my 2004 volvo xc90. Also the right side is not cooling. The air conditioning system gas is ok.


Have the alternator checked,and if it is fine,replace the cooling fan itself,it is bad,and if the right side does not start working ,then it is a actuator motor for that side,that is bad.

Mar 25, 2010 | 2004 Volvo XC90

2 Answers

While running the air conditioning, the air cools and then warms and eventually cools for a little bit again. I think the water pump is what's needed here? what is the big bolt behind the fan?


It is unlikely that the water pump is causing the trouble you describe. The large hex behind the fan is what you would turn to remove the fan clutch from the water pump shaft. This fan clutch is supposed to detect heated air coming through the AC condenser and radiator and engage the fan more positively with the water pump shaft when more air needs to me moved to cool the radiator and AC condenser. The fan clutch could be bad or the AC system may not be properly charged--either of these conditions could cause the problem you describe.

Feb 25, 2010 | 2005 Dodge Ram 1500

1 Answer

Blower/Switch Problem with Air Flow?


The extra air flow most likely turns the fan motor, check the fuses, check the fan motor switch for power if O.K. check the fan motor for power..

Aug 15, 2009 | 2002 Isuzu Rodeo

1 Answer

Temperature goes up when air conditioning is turned on


your car has two electric cooling fans one is specifically for the added heat load the A/c puts on the system. . This fan isn't turning on...check your fuses and the fan relays

Apr 04, 2009 | 1999 Honda CR-V

1 Answer

1998 cavalier heats up when idleing. Fan comes on but still heats


Hello senior, whenever the coolant system is opened up there's a possibility you could get air in your system, only way to get it out is by using the bleeder valve, check the coolant temperature sensor it may not be working properly, it tell's the cooling fan when to kick on and off, the condition of the drive belt is also another factor, along with the tensioner and tensioner pulley. it sounds like a problem with the water pump, the cooling fan, or air in your cooling system, to get a good inspection of the water pump fin's you have to remove it.

Apr 03, 2009 | 1998 Chevrolet Cavalier

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