Electric radiator fans not working

The radiator / engine cooling fans on my 1997 XK8 will not turn. I have the bigger fan wired to a switch so I can turn it on myself. So the problem is in the wiring. Any ideas on what to check. I’m sure they worked before I replaced the transmission. I bought this car 18 months ago and leave been working on it. Last week I finally got the Check Engine light to go out and it is running fantastic!!! It is a blast to drive and I love it. Thanks for your help. Mel H

Correction. I have been working on it for 18 months.

Do they not turn at all, or just not turn on? I’d say check continuity of the wires to see if one got broken. Also remember that they don’t run constantly. Don’t mean to talk down to you, but some people don’t realize that. Could check your thermal switch. Maybe check your relays and fuses if you haven’t. Someone else may have something else.

Thanks Jason. I will look for the thermal switch.
I normally would use the service manual that I have on my tablet , but I got my tablet wet and it is destroyed :frowning:

1 Like

I had the same problem on my 2001 XK8. I pulled the temperature sending unit (just in case and it was easy to get to), but the key problem was the relay for the fans which was original and had been abused by the road (water, dust, dirt, oxidation)…the usual stuff that happens when the relay is up front and low on the frame. I changed the relay and SUCCESS!!! The relay is cheap enough and is the problem many times.

1 Like