60 Amp Fuse Under Bonnet

[csj]

The 60 amp fuse under the bonnet next to the battery , first fuse to the catch keeps blowing

Does anyone know why many thanks

[gregers]

think you might want to search for fuse box/alternator cable replacement ?

[csj]

Ok thank you

[csj]

According to this pic it's glo plug fuse , why would this blow

[BrianH]

A problem with the glow plugs would be possible - either if one of them has gone dead short circuit, or the wiring leading between them is damaged.

 

Would suggest you disconnect the busbar and test each one with a multimeter, plus check the busbar for any damage (the busbar being the wire that connects between them). Your looking for any places its been rubbing against anything it shouldn't be (something metal - part of the engine or similar). A resistance check between the tip of the plug where the busbar connects and the engine itself should show up any dodgy ones - if one is found suggest you change the lot anyway, since you've already got it apart at that point.

Edited November 10, 2016 by BrianH

[BrianH]

it also shows the AUX heater on the same circuit - that being the bane of a lot of diesel drivers galaxy related issues, might be a more likely cause than the glow plugs. Does your heater work?

 

Might be worth disconnecting the plug to it and seeing if that helps?

[csj]

Thank you , is the aux heater the one by the back wheel ?

[gregers]

yes

[csj]

Ok thanks , don't think it works anyway

[BrianH]

Ok thanks , don't think it works anyway

It may well not do - But if its blowing the fuse none of the other stuff protected by said fuse will work either as you've probably already discovered. At least unplugging it should remove some of the possible causes of the fuse blowing. It might be an idea to protect the plug with something if your going to leave it like that as well (a plastic bag taped tightly around it should be enough in the short term).

 

The other way of isolating the glow plugs is to find the relay for them and pull it out of the socket - When do you see the fuse blow is it as soon as the ignition is switched on or just at random points? I'd assume you don't have the additional battery referred to in the picture?

 

It takes quite a lot to blow the larger rated fuses - the only time I've had any blow was due to drilling through the fusebox feeds by mistake (drill went through much quicker than i'd expected - should have put something there to protect the wires, unfortunately only thought of that after doing so), You have a short circuit somewhere. Its either going to be one of the two units or the wiring supplying power to them causing the problem.

[csj]

It's totally random for blowing .

Blew a while a go as lighter sockets stopped working , found it when trying to get heated screen to work

It also controls the heater in the car as gets cold when blown . Drove 50 odd miles no problem then drove 1 and it popped but nothing was on , its weird

[BrianH]

It's totally random for blowing .

Blew a while a go as lighter sockets stopped working , found it when trying to get heated screen to work

It also controls the heater in the car as gets cold when blown . Drove 50 odd miles no problem then drove 1 and it popped but nothing was on , its weird

 

Intermittent short circuit - Can be a complete pain to find. Its likely to either be a wire rubbing against something or worn through and able to move - it will intermittently touch something metal on the body or exhaust etc and cause it to blow.

 

Or its water gathering somewhere where it isn't wanted to go - the aux heater plug as well as the heater itself is a good possibility for this, unplug it and see if its all corroded inside the plug, leave it unplugged and see if it keeps happening?

 

Does the car start ok from cold? If it does then i'd doubt the glowplugs are on the same circuit, I'd also wonder if the listing you have is really correct for the fuse functions as well. Does your run on pump work when its blown? As you mention the heater that can cause issues as well, and might be the cause of the fuse blowing?