Radiator Fan Not Working

80

Asked by Cheri Sep 05, 2018 at 06:02 PM about the 2005 Jeep Grand Cherokee Laredo

Question type: Maintenance & Repair

We have replaced the radiator fan and both relays, along with thermostat, water
pump & radiator. Am still overheating. Fan not coming on. Am so frustrated, I
love my jeep, bought it used but seriously thinking i just bought a headache!
Please Help!!!

13 Answers

43,810

You have replaced 90% of the relevant parts but without the fan coming on it will definitely keep overheating. The only part you did not replace to make the fan run is the temperature sensor which kicks the fan on when coolant is hot. Now there are TWO temp sensors. One gives you a temp gauge reading. The other is the one that turns on the fan. Find and replace that one. And don't get discouraged. It only takes one little part to cause a major headache. I wish you well.

46 people found this helpful.
43,810

That temp sensor I spoke of is better called the "Fan Controller". On the 1999-2004 Jeeps it is in a tough spot under the right headlight housing. Not sure where it is on your 2005 Jeep but it will be near the radiator but not threaded into the cooling system.

22 people found this helpful.
80

Thank You Hornet_2497! And the well wishes! Will let you know:-)

8 people found this helpful.
120

There is a fan relay under the right headllight. Under the plastic cover on the bottom

12 people found this helpful.
140

Any luck resolving this? My brothers jeep has the same probably. I checked the fan, relays, fuses, etcc. Fan will turn on if I put 12v into the circuit, but the car will not turn the fan on itself. Please let me know what resolution you found. Thanks!

14 people found this helpful.
130

We cannot find the relay switch at all. Looked under passenger headlight cut out 2 spots. My jeep is supposed to be a 2004 Grand Cherokee Laredo. It's a straight 6. No towing package. We have replaced the thermostat, radiator cap, and the temperature sensor. Any other ideas on this relay switch? Any help greatly appreciated.

13 people found this helpful.
200

There is not a relay under the passenger headlight on 2004. I cut out the same holes. It is the TWO cube relays in the fuse panel on the passenger side inner fender. (Which I believe you said you already changed.) I had similar problems, over and over, until I attached an oversized Ground wire from the fan motor directly to the Negative battery post. After 6 relays and three fans, all it needed was a GOOD ground.

20 people found this helpful.
150

Absolutely right! Cut the hole under right headlight and nothing except a vacuum box. Went to dealership who spoke to mechanic that printed out the exploded view from his computer which showed the relay under the right light. Took the bumper, grill, back facia and no relay!

15 people found this helpful.
90

I have replaced the thermostat the coolant temperature sensor and the thermostat housing and now I’m getting steam from under the front of the engine and my fan isn’t working anymore it was 2 days ago and I can’t figure out witch fuse is the one for the fan under the hood any suggestions or insights as to what might be wrong with it

9 people found this helpful.
30

It not under the light on a 2004 ... it's a big relay deal in the box ... mine were fine ... thank god and you tube I realized that ... mine was the smaller fuse the 40A was burnt ...

3 people found this helpful.
30

I have a 2006 jeep commander . I have replaced all fuses all relays and blower motor and still nothing. Help please. Its like no power or something.

3 people found this helpful.
90

My 5.7 hemi 2013 Jeep Grand Cherokee's high speed fan will not come on and I know the fan works. Is there a way to wire the fan directly to turn it on manually?

9 people found this helpful.

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