Question about 4Seasons 37504 Relay - Engine Cooling Fan

1 Answer

Why does the cooling fan relay stop working on a 2003 jeep grand cherokee?

Why does it stop working? i replaced 3 with no luck.Could it be something with the pcm?

Posted by on


1 Answer

  • Level 1:

    An expert who has achieved level 1.

    New Friend:

    An expert that has 1 follower.


    An expert who has answered 20 questions.


    An expert that hasĀ over 10 points.

  • Contributor
  • 30 Answers

It could be the computer's power supply, you can get a cheap power supply tester to find out. Else if you have a spare power supply try replacing it.

Posted on May 23, 2014


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

2003 Jeep Grand Cheeroke radiator fan runs when car is off draining battery. Could it be the relay? If yes is the relay in the fuse/relay box under the hood or under the passenger headlight?

After checking the conventional relays and fuses, we found an additional auxiliary cooling fan relay behind the front bumper. Once replaced, all is well.

The fan relay is likely shorted and keeping the fan motor energized; to check this you can remove the relays from the fuse panel... remove the cooling fan rely from the underhood PDC (Power Distribution Center). Fot this and additional fuse details, check this link:

Hope helps.

Sep 11, 2011 | 2003 Jeep Grand Cherokee

2 Answers

. I have a 2003 Jeep Grand Cherokee and the

Likely your fan relay has burned closed. The relay is usually found below and behind the r/f headlamp above the vacuum reservoir. (looking from under the vehicle.)...I know, really great place for it! Someday I'd like to meet the engineer that decided to put it there!

Jun 05, 2010 | 2002 Jeep Grand Cherokee

1 Answer

Constantly replacing fan relay on my 2003 Jeep Cherokee

You should try getting the factory part because this is a common issue amongst jeep grand Cherokee's. it could also be the location because it is behind the bumper underneath the head light and that is an unusual spot for it to be placed.

Apr 08, 2010 | 2003 Jeep Grand Cherokee

2 Answers

2003 grand cherokee cooling fan not coming on , replaced thermostat. How do I determine if it's the fan relay?

the fan relay is very hard to get to! it's under the right hand side head light assembly.
you need to get to it to check the power to and from it when the engine is at the operating temperature.
a repair shop with proper equiptment can use a scan tool to demand the fan to turn on. if it does not turn on then the relay is bad, with condition that the fan is known good

Mar 09, 2010 | 2003 Jeep Grand Cherokee

2 Answers

Fan still runs when key is out

It is a cooling fan,I assume?The problem is a coolant fan relay,if the relay is unplugged,the fan will stop,that is the relay to replace.

Jan 19, 2010 | 1998 Jeep Grand Cherokee

2 Answers

2003 Grand Cherokee need to install fan relay

is in the fuse panel either by under the hood is a black box ,were all the fuses are ,if not check the other panel inside the jeep by the driver side. good luck

Sep 15, 2009 | 2003 Jeep Grand Cherokee

1 Answer

2002 jeep grand cherokee 4.0 6 cyl. cooling fan

Likely a bad relay. Check in the power distribution center under the hood. pull the relay out. Check #s on it, they are probably the same as on another one. If so, plug the other one in it's place. If fan problem ceases, replace the relay. Don't forget to put the one you removed back where you got it!

Dec 31, 2008 | 2003 Jeep Grand Cherokee

2 Answers

Cooling fan not coming on

HI ,check, fuses, fan relay , temperature suitch located at cilinder head ,fan motor,( those are the most comon causes ) Good Luck

Aug 23, 2008 | 1999 Jeep Grand Cherokee

Not finding what you are looking for?
4Seasons 37504 Relay - Engine Cooling Fan Logo

71 people viewed this question

Ask a Question

Usually answered in minutes!

Top 4Seasons Computers & Internet Experts

Les Dickinson
Les Dickinson

Level 3 Expert

18424 Answers

Doctor PC
Doctor PC

Level 3 Expert

7733 Answers

David Payne
David Payne

Level 3 Expert

14162 Answers

Are you a 4Seasons Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides