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Car Condenser Fan

Should the condenser fan start up as soon as you turn on the A/C

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  • Honda Master
  • 74,945 Answers

No the fan only comes on when the AC system high side pressure reaches a predetermined point, so it may not run for some time after the compressor engages.

Posted on Feb 09, 2012

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Posted on Jan 02, 2017

tommyboinow
  • 324 Answers

SOURCE: trying to remove radiator,condenser,fan assy,

you should not have to remove the bumper to replace these, you will have to remove the core support, wich you will see 2 bolts on each side, just oin front of the radiator....

Posted on Nov 26, 2008

  • 44 Answers

SOURCE: 2002 landrover freelander cooling fan assembly

The fan module is the big silver box with fins on it, right next to the fans. Just follow the fan cables and you will find it. Don't jumper the fans without unplugging or you may destroy the power transistors in the fan unit. Check the temperature sensor for the fan control unit - near the front of the engine - it should have some resistance - not be short circuit or open circuit, it is a sensor, not a switch. If short or open, that is likely to be the problem, otherwise, ensure that the control units have electrical supply, otherwise, it is very likely to be the control unit.

Posted on Aug 03, 2009

  • 15 Answers

SOURCE: ac does not blow cold at idle... ac condenser fan

that seems to be the problem. If the fan does not turn on when the a/c is turned on it could be a fuse, relay, control box, or just a bad fan. Try connecting the fan directly to see if it works. Does this car have 2 fans? normally all the small cars have 2 fans one for the engine cooling and one to assist the first when the a/c is turned on. Without the fan pulling air through the a/c condensor the had pressure goes up high enough to shut off the a/c compressor. It also causes some cars to run warmer than usual when stopped. Check the a/c condensor for blockage also which doesn't have anything to do with your fan not working.

Posted on Aug 18, 2009

  • 1374 Answers

SOURCE: ac compressor wont turn on blower wont blow

Do an A/C performance test ( make sure there is Refrigerant in the system otherwise that fan will never go on. If there is refrigerant in the system now you have to figure out which sensor including the switch,and a/c relay is giving you the headache.
.
Put key in ignition and turn it to on position. Now get you meter and check for B+ on both sides of each sensor in this circuit. The sensor that doesn't have B+ on both sides of its terminals is your culprit. Why? Because the sensor is basically and on /off switch with a set of limitation built into it.
Relay checks are basic continuity and resistance checks. B+ here usually means switch is a-oK. use shop manual to check the terminal for the switch at the relay.
Lastly unplug electical connector to Compressor and run a set of jumper wires from the battery to the compressor see if it magnatizes the clutch. If it doesn't you need a new compressor.

Posted on Mar 19, 2010

roniecon
  • 6826 Answers

SOURCE: Condenser Fan not working when the Air Cond is On.

There is a high pressure switch on the high side of the ac system,it most likely is bad.

Posted on Apr 06, 2010

Testimonial: "I had change the pressure switch but the problem still same"

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1 Answer

How long for the ac fan to start working? Ive noticed that the fan does not work when i turn the ac on, can this cause my car to overheat. I check the temp and coolant liquid both seems fine.


the ac fan starts as soon as the ac is switched on
the fan is provide cooling of the condenser before the radiator to prevent high head pressures in the ac compressor
it is the fan at the front of the car mand does not affect engine temp
there is a radiator fan between the engine and the radiator that will not start until the coolant temperature reaches a set temp at which point the ECM switches that fan on
if that fan is not working when the engine is hot , check for fan, coolant temperature sensor switch , fan relay, fuses or problem ECM

Jan 13, 2016 | AC Cars & Trucks

1 Answer

I have ford mustang 1999 when i start my car and


there will be a cooling fan in front of the condenser ( ac unit in front of the radiator) that should be running as soon as you turn the ac on. If that is not working then the head pressures for the compressor become excessive and to save the compressor from damage it is shut of at the clutch at the pulley. When you are moving there is air flow through the condenser and so the head pressures are maintained at the correct level. Have it checked out by an accredited auto ac specialist . If you have a viscous fan hub on the engine fan the consider replacing it as it is not pulling air through the radiator when idling

Sep 28, 2014 | Cars & Trucks

1 Answer

Why my A/C condenser fan won t stop running, dodge ram 2008


To clarify, the compressor and fan will run in defrost mode. The compressor and fan runs to dry out the air blowing onto the windshield.
Now if the condenser fan runs in "heat" you may have a problem with the fan relay or the main controller.

Sep 25, 2014 | 2008 Dodge Ram Pickup 1500

1 Answer

Air conditioner condenser and radiator fan stays on in 1999 honda accord


It is normal (required) for the condenser fan to continuously run while the ac is operating. It is like that on almost every vehicle.

Mar 15, 2017 | 1999 Honda Accord

1 Answer

Car boggs down when condenser fan runs


Hi Roger, I believe that you have more than one possible problem. The first is if the belt is not tight enough it will squeak. If the vacuum tubing to the relays controlling the up idle are broken or leaking the up idle will not work and as the drag caused when engaging the AC is substantial the engine revs will drop or can cause the engine to stall. If there is a problem with the AC compressor, it can also cause the symptoms you're reporting. The sound of the fan operating will increase with the volume of air circulated, which is normal, but I'm not sure what sound you're referring to? Regards John

May 03, 2012 | 2003 Ford Focus

1 Answer

The condenser fan blew out and damaged my radiator on a 2005 civic ex. The car is over heating and as the temperature needle goes up the radiator fan does not move. It only moves if I put the air on and...


hi
1st u have to replace condenser fan and radiator assy , it will solve your problem , cause due to no coolant radiator fan is not working and cause of engine overheating a/c system got trip . replace both condenser fan and radiator and put new coolant. thanks.

Mar 29, 2010 | 2005 Honda Civic

1 Answer

The cooling fan on the driver side of the radiator does not work i just put a new one where the water hose side is and now it runs but the other one does not. I put one new thermostat and one new fan...


One of the fans is for your radiator and the other is your condenser fan (for your air conditioning). The condenser fan starts at a higher temp than your radiator fan.
To test the condenser fan (the one on the right side, facing the car) unplug the electrical connector at the motor and use jumper wires to connect the fan directly to the battery. If it runs, check the fuses (engine compartment far upper left as you face the car), then the relay (right front corner of the engine compartment as you face it). The radiator fan typically engages between 189 and 199 degrees, but the condenser fan typically engages between 217 and 232 degrees. In other words they don't necessarily run at the same time. First of all, try letting the car run until the engine is warm WITH the ac running. If the condenser far does not run, then go through the checking procedure.
I hope this gets you started on a fix.

Oct 22, 2009 | 1995 Honda Accord

1 Answer

2003 dodge ram 1500 w/ 5.7L hemi


you may want to check the fan for the AC condenser under the hood of the car. Your AC condenser should have a separate fan similar to that of the radiator. See if it turns on while the AC is on. If it does not, you may want to swap the relay of the two fans. If swapping the fan relay would start the AC fan then have the relay replaced. If it does not turn on then have the fan tested. Check the wires. If the fan is Ok you may have to check out the condenser if it needs cleaning.

Sep 07, 2009 | 1996 GMC Jimmy

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