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, radiator electrical fan always on - C1500 Chevrolet Cars & Trucks

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Probable stuck relay for the fan if it runs even when the key is off. Turn off the air conditioner if you have it. Hope this helps!

Posted on Oct 09, 2010


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Radiator cooling fan always on

You didn't say what make and model of car you have.

If your coolant level is okay, suspect the sensor/module for the electric fan. They're a common unit to go wrong.

Ebay is probably the best place to find one.
Here's a Youtube link about how to check the fan switch:

How to check your radiator fan switch

Mar 21, 2016 | Cars & Trucks

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Where do i wire an electric fan 2001 pathfinder

you have to be more specific. electric fan? what kind or type fan are you asking about? cooling fan? radiator fan? heater fan? what? their wiring is as different as there are fans.

Jan 07, 2015 | 2001 Nissan Pathfinder

1 Answer

Why is are the electric fans always on?

Probably a stuck cooling fan switch, or relay. The fan switches on most Chryslers are screwed into the radiator, and easily accessed. Make sure you have a catch pan for your coolant, and wait till the system is completely cold.

Feb 17, 2013 | 1994 Chrysler New Yorker

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Where is fan relay sender for 2002 dodgecara van

The fan relay for the radiator electric fan is in the grille area, see enclosed picture. Thanks, don't forget to post a great comment about me!consistant_18.gif

Mar 26, 2011 | 2002 Dodge Caravan

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.


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 radiator electric fan works while a/c is on but it does not work in spite of the tempratur is so high and the fan cluch is ok

The electric fan should always come on when the AC is switched on, this is to ensure that the compressor cooler always has air being drawn though it. If the electric fan does not come on due to the high temperature of the engine coolant alone (AC off), then it is likely that a) the coolant sensor is faulty b ) the wiring to the sensor has either shorted out or come adrift.

Sep 08, 2010 | 2000 Isuzu Rodeo

1 Answer

My car is overheating and i need to know how to put in the water pump?

Is the water pump leaking coolant? If not, then why do you think it's bad?

If the engine is overheating, there are several other things to look at before you consider the replacing the water pump.

Are the fans electric motor driven, or fan belt driven? If fan belt driven, replace the fan clutch. If electric motor driven, check the fan control module and/or fan motors to make sure all is good there. Fan control module tend to fail in weird ways, so if nothing is wrong with the motors, replace the module.

Always, always, replace a thermostat that has overheated. Once overheated, they consistently fail. Make sure you properly refill the radiator with coolant after the stat is changed.

Check that the bottom radiator hose does not collapse.

Check the radiator for corrosion. Boil the radiator out, or have it done, or replace the radiator.

Dec 18, 2009 | 1997 Buick Skylark

2 Answers

The fan is constantly running, is this normal?

the fan on the trailblazer is attached to the water pump which is always spinning so yes the radiator fan always is running,,its mechanical,not electrical fan

Oct 19, 2009 | 2002 Chevrolet TrailBlazer

2 Answers

Describe your 1983 Phelo i have peugeot 504 model 1977 i want to know if it is corect that i remove termostat in summer for in crising the tempretureeugeot 504 Problem

Hi I know this is years later, but removing the thermostat is not advisable. If the car heats up in the summer have your radiator taken apart and the core cleaned by a professional radiator place. The 504's core tend to get blocked over time. it might also be a good idea to try and get a more heavy duty core or make fit a bigger radiator. Always have coolant in your system other wise the water will eat your cylinder head. It also prevents the radiator from getting clogged up.

Jul 09, 2009 | 1983 Peugeot 504

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