SilverRaven

Was driving to work today and the temp got up to 240 right before I shut the engine off. I opened the hood and found the fuse blown. When I attempted to replace the fuse it shattered into small pieces. After digging out most of the fuse body I found that it was melted into the fuse block. Anyone had this happen? I checked the connection at the radiator and that plug is fine. I can't see any other bare wires or other causes. Was able to get a new fuse into the socket and the fans still run. Not sure what I will find when I get home and investigate farther.

StKnoWhere

Have you changed the fan settings?

That is a high current circuit when fans are full on (~30 amp) so some corrosion or loose connection of the fuse leads/fuse socket could cause heat at the connection due to the added resistance and be the cause.

Changing the fuse is probably enough but I'd try hitting the contacts with some contact cleaner and then insert/remove the fuse a few times to clean the connection that fried.

cclive

Clean those contacts well and also examine them carefully and make sure they are nice and flat and parallel to eachother. You want as much surface area for the connection as possible. Nice flat clean surfaces facing eachother.

joaquinnparker

When a electric motor wares out it draws more amps to run . an bloes fuses melts wires switches . an fan motor needs to be replace as soon as possible.

KB9GKC

Douglas in Green Bay

Dano523

Might want check the front of the radiator for debris that may be causing lack of air flow, hence what may have caused the runaway on the heat problem to kick the fan into full on too long to cause the fan fuse to blow in the first place.

Also, would be a good time to check the radiator wire connect just before the fan to make sure that it did not melt as well.