Cooling fans not coming on.

[fantabstic]

2015 F3s Hot Rod Cruiser. My cooling fans quit working. Checked the 30 amp fuse and it is OK. Any suggestions? It is not overheating, just higher temp than normal with out the fans kicking in.

 

[Hypurone]

Hmmm, gotta be the temp sending unit for the fans. Better have your dealer check it ASAP. Cuz you know it only takes one time to really F things up! And sometimes that one time comes in a heartbeat!

 

[Chupaca]

Little checking.....

Do you know when the fans did come on....? could it be the weather change but if you know when they kicked in and they are no longer doing that it would be the temp sensor and you should have it checked out. On my RS the fan does not kick in till it hit 5 bars which seems to be past the mid point....:thumbup:

 

[SpyderAnn01]

There is also a relay in the right hand fuse box that controls the fans. Sorry but I can't copy and paste the service manual. If the relay is good you may have to have it hooked to BuDS to check the operation, it says if hooked to BUDS and you can activate the fan then it may be the Coolant Temperature Sensor.

Good luck.

 

[fantabstic]

Do you know when the fans did come on....? could it be the weather change but if you know when they kicked in and they are no longer doing that it would be the temp sensor and you should have it checked out. On my RS the fan does not kick in till it hit 5 bars which seems to be past the mid point....:thumbup:

Fans do not come on at all now. Before at about 4-5 bars. The weather in Florida is still hot so I am guessing you may be correct with the sensor being bad. You would think there would be a code active for that. No codes are active. ( thanks for your quick response)

 

[fantabstic]

There is also a relay in the right hand fuse box that controls the fans. Sorry but I can't copy and paste the service manual. If the relay is good you may have to have it hooked to BuDS to check the operation, it says if hooked to BUDS and you can activate the fan then it may be the Coolant Temperature Sensor.

Good luck.

I suppose there is no way to test the relay. I did notice it in the fuse box. No active codes right now. At least it has not overheated.

 

[youngers]

maybe a way !

I suppose there is no way to test the relay. I did notice it in the fuse box. No active codes right now. At least it has not overheated.

if you could put an ohm meter in line with your fans , when the temp gauge hits 4 or 5 bars , you would see the volt meter register something ? { just an idea }

 

[Easy Rider]

if you could put an ohm meter in line with your fans , when the temp gauge hits 4 or 5 bars , you would see the volt meter register something ? { just an idea }

For just a second maybe.
An "ohm meter" is not for use on an active circuit; that is, one with voltage on it.

But yes, you could check the voltage going to the fans......or lack of voltage......to try and sectionalize the problem.

I think the first thing I would suggest is checking the wiring and connectors going to the fans.

 

[SpyderAnn01]

For just a second maybe.
An "ohm meter" is not for use on an active circuit; that is, one with voltage on it.

But yes, you could check the voltage going to the fans......or lack of voltage......to try and sectionalize the problem.

I think the first thing I would suggest is checking the wiring and connectors going to the fans.

That test can be done with BUDS but that would require a trip to the dealer.

 

[fantabstic]

I doubt the temp sensor is bad. They just never go bad. The relay is most likely the problem. Easy to test. Switch it with another identical relay in the fuse box(maybe a headlight relay) and try again or try the item that you put the suspected bad relay in.

Thanks for the advice. I switched the rely with the lights on the right fuse box and there was no change. Obviously the relays are not the problem as are the fuses not it. I just hate to go to the dealer but it looks inevitable.