So my blower fan is acting up now. Sometimes it works fine and stays working, other days it refuses to come on at all. More off than on at the moment and it would be really nice to get some air moving in the cab again. So I'm thinking this is a relay problem. Any ideas on testing this? Anything else I should look at?

Thanks a ton once again...

By the way,,, has anybody else noticed that driving a 944 attracts bad drives like a moth to flame. Seems every time I drive it I get nearly ran over by some idiot. I almost ran over some jerk that decided to pull out right in front of me and then just kind of sit there. AArrrghghghg....

Thanks for the rant...

 

Check the long white resistor on top of your fan motor. This resistor will corrode and cause the fan switch to not function, or only function on certain speeds, at random times.