Fuse Box Problem

[john40]

Hi i have a galaxy mk2 2.3 petrol having a starting problem at the mo some days it will start and others it needs a booster pack on it, had a meter on it charges around 14v, when trying to start it drops to about 8v. had battery and alternator checked both ar ok doing what there suposed to be doing, did have a new starter fitted nt 6mths ago, what i did notice was the engin e fuse box the second black wire was all burnt could find where this wire go's to and if its the problem the usual alternator wires fine changed tha along with the fuse box over 12 mths ago. did a bit of looking around the wire thats burnt is vehicle interior wire has anybody chance the wire and how easy or hard is it

would apreciate any ones help on this if pos

thanks

john

[SilverBeast]

Common problem see here for details of what I did.

 

See the last note at the bottom for what can be done about yours.  You should be able to source some 150Amp welding cable, butt connector and a ring lug connector from ebay (I did but didn't used them).  You should be able to use lower rated wire if you want as long as it's greater capacity than the fuse link value in the Battery Junction Box.  Make sure you solder the joints and don't just crimp then as that is the reason they fail in the first place.  Be sure to solder the top black wire if it hasn't been done already while you are at it. 

 

Be even more sure that you insulate the butt joit adequately if you do this.

Edited August 12, 2014 by SilverBeast

[john40]

Hi SilverBeast

Just had a read through you reply to my fault going to give this a go when am off work at the end of the month, thanks for your time will let you know how i get on

[Scorpiorefugee]

Silverbeast is probably on the money with his comment but I am a little puzzled about the battery voltage falling to 8 V when trying to start.

 

If the battery really is in good condition then there is no way that the voltage should fall that low when starting. For that to happen either the battery is in very poor condition or there is an awful lot of current going somewhere. 

 

At  8V the quality of the ignition spark would be seriously compromised and it is possible that the radio might forget everything. I'm guessing that you are checking the voltage somewhere other than the battery terminals.