FRporscheman

Has anyone seen/experienced this? This never happened before last week. I'm thinking it's just a cheapo fuse, because the previous fuse was in there for 20 years until I blew it by letting two wires spark together.

This is the fuse for the sunroof, rear hatch release, and heater blower. Fuse #9 in the upper fuse panel, from an early car. 25 amp obviously. I put in another fuse of the same brand and it was good (I hardly used the roof, hatch release or fan though). I sold it on Sunday.

The new owner called me yesterday and said the fuse had melted. I told him it's probably because the fuse was a cheap one and that he should buy a nicer one to put in. He said he already did, but the roof, hatch release and fan don't work. Any ideas?

Could some of the plastic have maybe melted onto the fuse panel terminals? That's all I can think of.

Why the hell would a fuse melt? The metal is fine, it didn't blow.

944bucky

The heat was generated from the contacts from the looks of it. Makes me think of possible corrosion on the contacts resulting in high resistance and heat production. I'm not sure though, I've never seen that before.

FRporscheman

Hey 944Bucky, I'm moving to Riverside in a couple of weeks. We should hang out once I'm down there, since I won't be too far away.

I was thinking that also. Since it melted from the ends, and since a new fuse won't work, there must be corrosion or some other junk on the contacts....

Chris_924s

Normally a bad ground/ power surge will pop the fuse- not melt it.
was it the correct fuse?? I suspect the fuse is the culprit here- a bad part. However there is merit in the oxidation/ resistance theory.

I too have never seen that. that sucker got hot!

Bart

Did he say if he was using the heater fan when it melted? I could see this if there was a heater fan motor on it's way out and pulling extraordinary amperage but not enough to pop the fuse. And probable corrosion on the terminals of the fuse box.