3200 blowers stopped

[Kevgta]

Oneball maybe my wiring is a bit spoof.
Haven't had car long hopefully not a tracker.
What's going on in my fuse position 1?

 

[Oneball]

I reckon that adapter either the red wire and the black wire could be the power and earth for a tracker.

Part of my tracker system was up behind the passenger side dash.

What’s that fuse for is it always live?

 

[CatmanV2]

Someone's put a piggyback on it to power 'something else' You'll need to follow the cable.

C

 

[Scaf]

I am certainly no auto electrician but surely updating the fuse makes the situation worse not better. Too much draw should cause a blow and updating the fuse could move the problem somewhere else.
If the fuse was correct, could it have been faulty?
Looks like a vehicle fire in the making so take no chances - get an expert to look at it.

 

[Saigon]

I am certainly no auto electrician but surely updating the fuse makes the situation worse not better. Too much draw should cause a blow and updating the fuse could move the problem somewhere else.
If the fuse was correct, could it have been faulty?
Looks like a vehicle fire in the making so take no chances - get an expert to look at it.

Or at the very least, for the time being put another 30 A fuse back in and see what happens, don’t replace it with a 40 A fuse.

 

[Kevgta]

Thanks for the advise, likewise I no nothing about car electrics so keeping a close eye on it.

 

[Saigon]

Thanks for the advise, likewise I no nothing about car electrics so keeping a close eye on it.

The bottom line is that the loop is drawing too much current, well above 30 A looking at the state of your 30 A fuse. It won’t be corrosion at the fuse contacts because that would cause a higher resistance in the circuit, which would in turn result in you drawing (less current).
Basic Ohms law I = V/R, increase the resistance less current. Reckon your fuse will eventually blow again, and that’s a good thing as opposed to increasing the fuse rating and the wiring etc melting. You have a problem with your motor or it’s wiring which will require resolving. But for now just replace the fuse with the correct rating and take it from there, you still have the required protection. Or as already suggested by catman, someone has added an additional load to that circuit. But you are still adequately protected with your 30 A fuse.

 

[Oneball]

The bottom line is that the loop is drawing too much current, well above 30 A looking at the state of your 30 A fuse. It won’t be corrosion at the fuse contacts because that would cause a higher resistance in the circuit, which would in turn result in you drawing (less current).
Basic Ohms law I = V/R, increase the resistance less current. Reckon your fuse will eventually blow again, and that’s a good thing as opposed to increasing the fuse rating and the wiring etc melting. You have a problem with your motor or it’s wiring which will require resolving. But for now just replace the fuse with the correct rating and take it from there, you still have the required protection. Or as already suggested by catman, someone has added an additional load to that circuit. But you are still adequately protected with your 30 A fuse.

increased resistance from dirty contacts will cause heat so the melting isn’t necessarily from an increase in current.

 

[CatmanV2]

increased resistance from dirty contacts will cause heat so the melting isn’t necessarily from an increase in current.

This ^^^

C

 

[Kevgta]

Cheers, just had a light bulb moment I reckon that fuse piggy is for a wire that runs into glove box used for a garmin sat nav.
I might unplug piggy see if power to sat nav stops.
Do you think this could be cause?

 

[Oneball]

Cheers, just had a light bulb moment I reckon that fuse piggy is for a wire that runs into glove box used for a garmin sat nav.
I might unplug piggy see if power to sat nav stops.
Do you think this could be cause?

It’s a different circuit to the blower (it’s on a different fuse) so won’t have caused the melt.

My money is still on dirty contacts but it’d be nice to know for sure. Clean the contacts, change the fuse, see if it gets warm with the blower on.

 

[CatmanV2]

Cheers, just had a light bulb moment I reckon that fuse piggy is for a wire that runs into glove box used for a garmin sat nav.
I might unplug piggy see if power to sat nav stops.
Do you think this could be cause?

Not of your A/C issue, no.

C

 

[Kevgta]

When you say dirty contacts do you mean the metal bits fuse slots into?

 

[Kevgta]

I really appreciate your help fellas I'm no mechanic

 

[Saigon]

This ^^^

C

As I said, Increased resistance in a DC circuit will reduce current draw not increase it, that’s a fact.
Agreed It can also cause heat but the OP stated that his fuse box (contacts) and fuses were totally clean and dry with no sign of deterioration. So the advice to fit the correct rated fuse and see what happens still stands. But it is most likely that there is a fault causing excessive current draw, or someone has added additional load to the circuit. But definitely don’t increase the fuse rating.

 

[CatmanV2]

Close up, those terminals look very not clean and intact...



No one's arguing that increased resistance won't reduce current. It will.

C

 

[Oneball]

When you say dirty contacts do you mean the metal bits fuse slots into?

Yep, if you’ve got some fine sand paper give it a rub on the bits that will touch the fuse. Or use something to scratch or scrape them or a small file and if you’ve got some contact cleaner or alcohol use that too. Then make sure the fuse fits tightly in the slot.

 

[Saigon]

Yep, if you’ve got some fine sand paper give it a rub on the bits that will touch the fuse. Or use something to scratch or scrape them or a small file and if you’ve got some contact cleaner or alcohol use that too. Then make sure the fuse fits tightly in the slot.

Just looking at the close up which Catman has just supplied, might need a bit more than that !

 

[Kevgta]

It's made a right mess, will have to try clean it up best I can....

 

[fphil]

Better to understand first what's going on. Fuses are not only used for the display