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I tried to run a direct wire where my fan relay goes then there was a click the fans shut off and after that my car didn't want to start nomore what could have happened

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  • Cars & Trucks Master
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Possibly you burnt out the relay . and something else . NOW you pay a technician to fix it .

Posted on Dec 25, 2016

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: 1995 Buick LeSabre heater fan

I have the same issue on my 1995, except the fan shuts off when the ignition is off. And the climate control panel lights up, but the digital readout doesn't work. Nor does the rear defrost or any other buttons on the panel. Any ideas for this addition?

Posted on Sep 20, 2008

  • 126 Answers

SOURCE: a/c fan not working

are you saying the fan never comes on or just doesn't come on when you're watching it? most fans come on when the radiator coolant reaches a certain temp, then flips a relay to send power to the fan.

if the car is warmed up and the fan is not coming on (or if the A/C is selected on and fan doesn't come on), i would suspect the relay since you already proved separate power to the fan does make it work.

good luck

Posted on Jan 27, 2009

  • 1 Answer

SOURCE: cooling fan relay and fan wiring diagram

zirgo fan setup for relay and sender

Posted on Mar 17, 2009

  • 186 Answers

SOURCE: radiator cooling fan 30 amp. fuse keep blowing

The fan may run with jumper wires but if it''s blowing the 30 Amp Maxifuse it's needs a new or used fan motor.It's pulling too many amps.I have almost never seen a fan relay concern.Only other thing you may check is the wiring down near the fan shoud I have seen the 2 wires get loose from the conduit & melt onto exhaust manifold.Hope tHis Helps

Posted on May 12, 2009

  • 1 Answer

SOURCE: the fan motors keeps running after car is shut off. Also sometimes fans start when car is started cold.

If the fans didn't run any further the engine continues to warm and possible seizure will occur. This is also the reason you will probably go through batteries in the long run. Hopefully this helps the issue you are having.

Posted on May 26, 2009

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Need to find location of coolant fan relay and sensor for 1990 pontiac sunbird ?


if your rad coolant fan is not working check the fan itself as this is a common problem on these cars. disconnect the plug from the fan motor and run jumper wires directly from battery to the fan motor terminals. if the fan doesn`t run replace fan motor. if it does run the check fuses then fan relay. the relay is in the relay box, the coolant sensor for the fan motor is in the head that goes into a coolant passage that has a 2 wire connector.

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98 Olds van, how does the high/low cooling fan work?


I'm showing three fan relays in the wiring diagram.
The fans are powered by two 30amp maxi fuses. The relays and fan motors are grounded thru the engine computer. The computer takes input from the coolant sensor and the ac control to decide when fans are needed. You would need to know if the computer is grounding the relays, and if not, why not. You may need a scanner to monitor computer output.

Jun 28, 2013 | 1998 Oldsmobile Silhouette

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Car won't start after starting it with coolant temp sensor disconnected


Try a boost first before taking things apart,sound like low voltage.
Now about the fans.Sometimes it's easier (if the fans will work with voltage applied) just to install a relay and fire it off the switched power wire at the A/C compressor.Use this relay supply to voltage to the fans when the compressor runs.Want fans when not using A/C?Run a "in rad hose" temp switch and run that wire to the same relay to run fans when temp rises.Think after market hot rod stuff and keep it easy and simple,

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Chrysler lhs overheating. fans dont run, fuse is good


odds are your fan relay is out. I take your model has two fans with seperate eletric motors.

Nov 03, 2011 | 1997 Chrysler LHS

1 Answer

Cooling fan will not come on. about two weeks ago car started to overheat. then heard a clicking sound. car then stalled


if the cooling fan didn`t come on then you need to find out why.is the cooling fan motor seized or is the fan not being sent a signal from the ecm(computer) to turn on the fan through the cooling fan relay.if you take and unplug the cooling fan and run a power wire and ground wire to the connectors at the fan and it won`t work then the fan is seized and needs replacing.this is the most common problem with these.the other is the relay.if the ecm isn`t receiving a signal from the cooling system sensor then it may or may not turn on the check engine light.then you may have to have it checked with a scan tool that will show you what the ecm is seeing,to see if the temp is registering with the ecm.

Aug 09, 2011 | 1996 Buick Skylark

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Radiator fan won't run unless air conditioner is turned on. Can it be straight wired to run all the time that car is running?


it would be much easier to replace the fan relay under hood in main engine fuse box[black box under hood on either driver or passenger side fenderwell]lift cover off box on under side of lid look for fuse and relay positions. replace fuse or relay that goes to primary fan,not a/c fan but primary fan.you may also need to check for a bad temerature sensor,located on the top of the thermostat.you can straight wire it,but i do not,,recommend at all. you will suffer from future problems that you really don't want to deal with.repair the relay,replace the relay,or fuse or just replace a bad fan,which may be the problem.try the fuses 1st,relay 2nd,then fan next.trust me,you don't want to straight wire the fan,if you do and fans bad.you'll loose your motor due to engine fire,shorted circuits,and further on. thank you for choosing fixya.com and if you need directions on fan replacement,please repost your questions to fixya.com if i'm not online their are plenty of experts that can assist you,just so you know.

Jan 06, 2011 | 1993 Ford Tempo

1 Answer

Where is the relay for the radiator fan is locat at.


Hello
The electric fan relay is USUALLY the suspect in cooling related problems on electric fan-equipped 4.0L WJ's. If you take it to the dealer, be prepared to pay. The authorized way to replace this relay is to pull the entire from bumper cover to gain access. The relay is located under the passenger side headlight. The shortcut is to cut an access hole in the plastic under the headlight.
I wish I could show you the authorized method and how to cut the access hole, however when I went to replace my fan relay (for the second time), I found that the dealer who did the work previously had cut a hole for me already - even though I was charged labor for them to remove the bumper cover.
For this second relay change my WJ has experienced now, my symptoms were simple to diagnose. My engine fan would remain on after shutting off the vehicle. Fortunately, I was the one driving the vehicle when this started happening (not the Mrs.). Basically, something goes awry in the fan relay, allowing a constant stream of 12v power to reach the fan - regardless of ambient temperature or key position. I promptly returned home and disconnected my negative battery cable to shut the fan off.
Removal
1.Remove the negative battery cable from the battery.
2.To cut the access hole for the relay, first you must remove the passenger side headlight. To do this, remove the jackscrew from the top of the headlight. The jackscrew is directly on top of the headlamp and does NOT screw into the radiator core support (see pic below). After the jackscrew is fully removed (this screw is roughly 6" long), grasp the headlight assembly and forcefully pull the headlamp outward. Unplug the headlight wiring harness. Notice the exising hole in plastic under headlamp on my WJ.

Headlamp Jackscrew
Click to Enlarge Headlamp Removed
Click to Enlarge
3.Unscrew the two screws holding the relay to the body.
4.There isn't alot of slack in the wire, but enough to pull the relay out of the hole and disconnect it. Note that the electrical plug has the same sort of locking clips as other locations in the engine compartment. Use caution releasing the locking click to avoid breakage.

Fan Relay mounted
Click to Enlarge Fan Relay unmounted
Click to Enlarge
Reinstall
1.Connect the new relay to the wiring harness. Be sure it is firmly seated.
2.Attach the relay to the vehicle body in its previous location.
3.Reconnect the headlamp wiring harness.
4.Insert the headlamp back into its original position.
5.Reinstall the jackscrew in the appropriate hole. Be sure to apply some pressure to the bottom of the housing while doing this to assure the jackscrew passes through the retaining loop on the back of the headlamp. If you miss this retaining loop, you run the risk of breaking it off when tightening the jackscrew.
6.Reattach the negatie battery cable to the battery.
7.Start the vehicle and let it idle until normal operating tempurature is reached. You should hear the electic fan kick on around 210°.

Jul 14, 2010 | 2000 Jeep Grand Cherokee

1 Answer

I need to see a picture of the cooling fan plug to the fuse box , i need to know if there is some kind of fuse or relay in between the plug and the fuse box.


It's just a direct wire to the relay. The way the system works is the engine temperature sensor signal the ECM which signal the Relay. The relay is direct to the fans and the fuse. The Relay and is also controlled by the by pass switch from the A/C unit which sends signal to the Relay and from Relay to fans direct to battery and fuse. Hope this helps. If your still not getting the fans to work, check the ground wire and then try running a direct wire from the Battery. If it's works then replace the relay if the fan does not work with the direct wire, replace the fans. Good luck and hope this helps. 

Jul 03, 2009 | 2006 Chevrolet Cobalt

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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.   

Jun 11, 2008 | 1995 Geo Metro

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