How far up the scale before fan comes on? - resolved

[fastdruid]

Basically, I need to check for continuity between battery neg and, for example, the bolthead which holds the radiator and fan together?

I'd do it to the body of the fan switch myself.

Druid

[NC35!]

Basically, I need to check for continuity between battery neg and, for example, the bolthead which holds the radiator and fan together?

I'd do it to the body of the fan switch myself.

Druid

You're the man! After I went back out, I checked for continuity between the fan and earth to find nothing, then tried again from the flats of the switch to earth to still find nothing.

I took the lower rad off and cleaned up the connections between the earthing wire and the fan/radiator mount, then checked again to find perfect continuity. I let the engine warm up again, and just after half-way up the scale, the fan came on!

Fantastic! Thanks for stopping me taking the switch out to do the Haynes check-the-switch-with-boiling-coolant-on-the-cooker-while-the-boss-is-in-and-no-doubt-ranting-at-me routine!

I'm very happy! Thanks! :)

[Neosophist]

PS - Agree, nice road :D

Glad you got it sorted!!

I posted that in the wrong thread.. had like 10 open :D

[fastdruid]

You're the man! After I went back out, I checked for continuity between the fan and earth to find nothing, then tried again from the flats of the switch to earth to still find nothing.

I took the lower rad off and cleaned up the connections between the earthing wire and the fan/radiator mount, then checked again to find perfect continuity. I let the engine warm up again, and just after half-way up the scale, the fan came on!

Hurrah!! :D

I've found I always seem to look for the complicated reason yet so often it's something small and stupid.
So now I try and start on the obvious and easy to check and work up.

Druid

[Neosophist]

You're the man! After I went back out, I checked for continuity between the fan and earth to find nothing, then tried again from the flats of the switch to earth to still find nothing.

I took the lower rad off and cleaned up the connections between the earthing wire and the fan/radiator mount, then checked again to find perfect continuity. I let the engine warm up again, and just after half-way up the scale, the fan came on!

Hurrah!! :D

I've found I always seem to look for the complicated reason yet so often it's something small and stupid.
So now I try and start on the obvious and easy to check and work up.

Druid

lmao.. i know that feeling, can't believe I forgot about the earth tbh! :D