Search did not help with what I am after...

The fans are always on low in the v8, even with A/C on and on hot days. The car never overheats. I would still like the fans capable of going into high speed though.

In my other car (EF2 GHIA 6) the fans come on high when a/c is on or inside fan is on high I think, I have heard if the relays are screwed- fans wont work at all- what do you think the issue could be? Is there anything I can rule out?

Thanks

hi, why not swap the relays from one car to the other and see if the problem moves cars.
just watch out i think the relays are different,( one normally open, other normally closed?? ) make sure u put them in the right position

Unfortunately this is something these cars do. What you can do is take a signal from your A/C relay to force the FAN relay on whenever the A/C is on.