Question about Dodge Caravan

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2011 Radiator Fan does not work

Changed fan because checked fuses and everything was good down 200 dollars on this any ideas

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Did you check for voltage at the fan terminals when it was supposed to be on? It's probably the temperature switch, but you have to trace voltage and bridge out the switch to check, which is what you should have done before spending 200$

Posted on May 16, 2014

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Did you check for power at the fan? The fan isn't supposed to run all the time, a board signal energizes the fan relay when the fan is needed. Note that engine temperature may not be the only criteria.

I once had a car with a thermostat problem that prevented the fan from coming on, no matter how hot the car got! I figured it was a faulty computer board, so I rigged a jumper to the fan relay and managed it manually until I could get it checked out; multiple technicians were baffled.

In any case, the fan won't run unless there's power to its leads. A cheap multimeter will eliminate the guess work. If there is no power to the fan when you expect it to run, look for a sensor or board issue.

Posted on May 16, 2014

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Posted on Jan 02, 2017

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SOURCE: radiator fan stays on all the time and car runs rough

The fan relay may be malfunctioning (the fan relay is what actually switches the fan on and off and gets its signal from the ECM, which in turn gets its signal from the temp sensor) testing/replacing the relay and temp sensor would be the best thing to start with,... unless you notice any additional (non factory) wire attached to the power wires to the fan.  Sometimes folks, in an attmpt to fix  an overheating or fan relay problem, attach a ignition switched positive lead from the fusebox or other switched source to the positive poer lead on the fan,.. making the fan run whenever the ignition is switched on.   

Posted on Nov 12, 2008

  • 193 Answers

SOURCE: Radiator fan not working

Hi. Check the bottom of the radiator or on the side, as you also have a temperature-sending switch. The switch must reach a certain temperature before sending a signal on to the fan relay.

The switch just screws into the radiator.

If you would like to contact me again about this or other problems, feel free to do so.
Bill
ASE Master Technician

Posted on Nov 26, 2008

  • 2427 Answers

SOURCE: A/C fan and radiator fan aren't working

There should be a relay controlling them, check the relay comm for power.. You can connect the radiator fan driectly to the battery to prevent over heating. It has two wires, splice them and connect them to the battery via 2 other pieces of wire. In my opinion its very difficult to actually help with this one remotely since we would need to be on spot to test the circuit. I strongly suggest haveing an autoelectrican check this for you. YOu can connect the radiator fan directly to the battery to help you get there..

BTW the radiator contains a thermostat. this turns the fan on and off, of this is faulty you will have the problem you described. check the thermostat in the radiator.

Posted on Feb 07, 2009

  • 1 Answer

SOURCE: radiator fans won't come on

Hey I had the same problem with my 95 olds cutlass supreme. First i checked that the fans were receiving power by testing the voltage. Then I noticed that they were recieving voltage just not coming on. When the engine temp got pretty high, they finally came on, another words the gauge could be broken or the engine just does not tell the fans to come on until it has reached a high temp. So i started the vechicle, left it in park and gave it gas until the temp guage read very high, it reached like 230 to 250 then the fans came on. Try getting the temp up there and then see if the fans come on an dlet me know at keaka18@aol.com

Posted on Apr 14, 2009

SOURCE: radiator fan not working 1996 acura integra..

Jump a wire from the battery to the hot lead on the fan -- see if it turns -- if it turns, check the fan relay.

Posted on May 27, 2009

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Hello Robert,you should be able to jump it out you just need to apply power to hot side of fan ,be carefull not to short it out, look in fuse box for fan relay, but it may be a tempature sending unit that tells fan to come on , also if you have a/c turn that on it should trip fans to on . telling you they do work. good luck I really hope this helped you.if it did please let me know.
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Fan comes on when switch ignition on instead of when hot Tazz


If the fan not turning on when car engine getting hot,then car will notice overheating.Click this link below for troubleshooting:---http://technoanswers.blogspot.in/2012/02/car-running-hot.html--------To know how engine cooling system works ,click the link below :----Engine cooling components working?

http://repairhelpcenter.blogspot.com/2011/11/engine-cooling-components-working.html

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How does Vehicles Engine cooling system works? http://repairhelpcenter.blogspot.com/2011/11/how-does-vehicles-engine-cooling-system.html
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--------

This will help.

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My radiator fan is not working


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