help with my in-line fuse

[pyrobob182]

last week my girlfriend was messing with my car trying to start it --she doesn't know how to start a manual //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif -- and was quickly turning the key on and off.

Anyways... she blew my 60A AGU in-line fuse in the power line that runs from my battery to my amp. Now everytime i try to replace the fuse it just immediately blows again. I tried disconnecting the battery and then putting the fuse in -- but upon connecting the battery back up it just blew again. Any help would be greatly appreciated.

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[Prowler573 5,000+ posts]

If it is immediately blowing as soon as current passes through it I'd say there is a short to ground somewhere. Check that power cable along its entire length to see if any insulation has been compromised and touching metal somewhere. Barring that I'd suggest there is a problem with the amp possibly.

It's awful hard at times to diagnose something you can't see or lay your hands on. Just having "My fuse keeps blowing - why?" is a bit vague. I understand that your g/f was fighting with the car to get it started but I think likely that is merely a coincidental occurrence rather than a potential cause.

 

[pyrobob182]

ok thanks -- i'll go check that

 

[maylar 10+ year member]

I disagree. I don't think it's coincidence. Turn-on/turn-off transients are a semiconductor's enemy. Got a bad feeling the amp is broken now.

 

[93 saturn sl2 10+ year member]

It is probably just a short somewhere. Check the main power wire that goes into the fuse holder.

 

[pyrobob182]

well -- i figured it out -- it was actually the connection between my amp and power wire- turns out it was really loose. So that mixed with the quick on and off via the GF must have done it.

So now I have a new question. I have an 8G wire and a 12G wire that both run from my battery to my amp and out. The Smaller wire was in tehre when i got my car. I have had both the 12G and the 8G connected before - seemingly without problems. Would doing this be a bad idea in any way you think?

On a side note... I went to two auto part stores and a Radioshack that all had fuses and none of them had a 40A fuse. Does that seem odd to anyone else?

 

[squeak12 10+ year member]

Ive got some 40 A Maxi fuses if you need some still. Also a 100A.