OH left her lights on...
OH left her lights on...
Author
Discussion

SystemParanoia

Original Poster:

14,343 posts

215 months

Monday 2nd January 2012
quotequote all
well st happens as they say, but thats not the issue im having right now. as yet i haven seen the car and wont until tomorrow when im local again.

her friends boyfriend decided that he "does cars" and convinced her to let him jump start it with his car.

prior to his help, the car would do a lazy dead battery kind of turnover, and all the electrics worked fine.

using my jump leads that i keep in her boot for her "just in case", he then proceeds to create a massive spark and a moderate ammount of smoke under the bonnet and promptly all electrics in the car become totally dead.

i believe that he managed to reverse the connections to the battery which has temporarily killed the car.

being an old suzuki swift, there isnt much in the way of electrics in it, so im thinking there are only 2 possible components that may be blown.

either the Main 80A fuse under the bonnet.

or the battery is toast

or both!


any clues for me guys?


oh.. and the friends booyfriend will get a slap when i see him, and the OH too for not using the leads like i showed her lol smile

Edited by SystemParanoia on Monday 2nd January 20:25

Liquid Knight

15,754 posts

200 months

Monday 2nd January 2012
quotequote all
Depending on the year he could have cooked an earth strap. that amount of smoke would indicate it and sadly the fuse is at the business end of the loom so if it's crossed chances are it could be something more serious.

SystemParanoia

Original Poster:

14,343 posts

215 months

Monday 2nd January 2012
quotequote all
that's not positive frown

but i forgot about the earth strap, ill make sure i check that thanks smile

the swift is a X reg model, so nothing that will be missed if its terminal, i just really enjoy it's 3cyl sound smile

davepoth

29,395 posts

216 months

Monday 2nd January 2012
quotequote all
SystemParanoia said:
that's not positive frown
Good pun.

Try the fuse, that's an easy fix. A friend's dad connected the battery on her VW camper the wrong way round once. It started...

SystemParanoia

Original Poster:

14,343 posts

215 months

Monday 2nd January 2012
quotequote all
lol the joys of no electrics what-so-ever biggrinbiggrin

DanielC4GP

2,792 posts

168 months

Monday 2nd January 2012
quotequote all
I'm sorry but what kind of bright spark gets the terminals on a battery mixed up?

Just try not to blow your fuse when you see them both tomorrow.

In my opinion you should start with seeing if the main fuse has gone like you've already said, then the battery and then onto other major things like the wiring.

Pooky67

577 posts

176 months

Monday 2nd January 2012
quotequote all
SystemParanoia said:
the friends boyfriend will get a slap when I see him, and the OH too for not using the leads like i showed her
You could end up charged with assault and battery

grayze

790 posts

185 months

Monday 2nd January 2012
quotequote all
Pooky67 said:
You could end up charged with assault and battery
Shocking!

Urban Sports

11,321 posts

220 months

Monday 2nd January 2012
quotequote all
Watt is there to be positive about here it's absolutely shocking that this happened, don't spark him though you might end up on a charge.

Astra Dan

1,805 posts

201 months

Monday 2nd January 2012
quotequote all
Might have blown the diodes in the alternator too. A lot of Jap cars have a fusible link on the +ve battery terminal.

SystemParanoia

Original Poster:

14,343 posts

215 months

Monday 2nd January 2012
quotequote all
Astra Dan said:
Might have blown the diodes in the alternator too. A lot of Jap cars have a fusible link on the +ve battery terminal.
ahh brilliant.. ill check that too!!

OlberJ

14,101 posts

250 months

Monday 2nd January 2012
quotequote all
davepoth said:
Good pun.

Try the fuse, that's an easy fix. A friend's dad connected the battery on her VW camper the wrong way round once. It started...
Did it run backwards?

danyeates

7,248 posts

239 months

Monday 2nd January 2012
quotequote all
Some numpty did this on my boat. Luckily it was just a load of fuses including the big main one on the engine. All the electronics were fine once the fuses were replaced which was food as I had a lot of navigational equipment on it.

ensignia

934 posts

252 months

Monday 2nd January 2012
quotequote all
Your missus is sleeping with her friends BF I'm afraid. frown

SystemParanoia

Original Poster:

14,343 posts

215 months

Monday 2nd January 2012
quotequote all
lol didnt see that one coming....


burger

johnpeat

5,328 posts

282 months

Monday 2nd January 2012
quotequote all
A few weeks ago, someone was trying to jump-start a car outside the local doctors - I was waiting for someone and noticed they were about to connect-up the wrong way around and so shouted-over before the damage was done...

Having nothing else to do I stuck my nose in and suggested that they connect the neutral to the bodywork of the dead car and not the battery (as the battery looked v.old and worn and I don't like the odds of batteries like that going pop).

"I know what I'm doing - I have to do this at least once a month" says the bloke and so I leave him - he gets into the other car, she gets into the dead car and there's a pop followed by a horrible gurgling noise followed by silence...

My guess is that the old battery was so screwed that it was, effectively, a resistor - a the jump made it overheat and it exploded (the pop) and dumped it's contents into the car's electrics and/or onto the road (the gurgling).

Hey ho - the 'neutral to the bodywork' trick is also useful for not spiking some car's ECUs - or so I'm told (BMW owners, are you listening? This is underbonnet stuff which applies to YOU!) smile

Matthen

1,390 posts

168 months

Monday 2nd January 2012
quotequote all
johnpeat said:
A few weeks ago, someone was trying to jump-start a car outside the local doctors - I was waiting for someone and noticed they were about to connect-up the wrong way around and so shouted-over before the damage was done...

Having nothing else to do I stuck my nose in and suggested that they connect the neutral to the bodywork of the dead car and not the battery (as the battery looked v.old and worn and I don't like the odds of batteries like that going pop).

"I know what I'm doing - I have to do this at least once a month" says the bloke and so I leave him - he gets into the other car, she gets into the dead car and there's a pop followed by a horrible gurgling noise followed by silence...

My guess is that the old battery was so screwed that it was, effectively, a resistor - a the jump made it overheat and it exploded (the pop) and dumped it's contents into the car's electrics and/or onto the road (the gurgling).

Hey ho - the 'neutral to the bodywork' trick is also useful for not spiking some car's ECUs - or so I'm told (BMW owners, are you listening? This is underbonnet stuff which applies to YOU!) smile
hehe Some people just don't listen.. We covered all this stuff at school (im only in college) unfortunately, I don't think much of the class was listening, so all this essential/basic car stuff (checking tread, pressures, jump starting and oil changing etc, and slightly more complicated stuff) will all have fallen on deaf ears..


Classic Grad 98

25,725 posts

177 months

Monday 2nd January 2012
quotequote all
johnpeat said:
Having nothing else to do I stuck my nose in and suggested that they connect the neutral to the bodywork of the dead car and not the battery (as the battery looked v.old and worn and I don't like the odds of batteries like that going pop).

"I know what I'm doing - I have to do this at least once a month" says the bloke and so I leave him - he gets into the other car, she gets into the dead car and there's a pop followed by a horrible gurgling noise followed by silence...

My guess is that the old battery was so screwed that it was, effectively, a resistor - a the jump made it overheat and it exploded (the pop) and dumped it's contents into the car's electrics and/or onto the road (the gurgling).

Hey ho - the 'neutral to the bodywork' trick is also useful for not spiking some car's ECUs - or so I'm told (BMW owners, are you listening? This is underbonnet stuff which applies to YOU!) smile
I always try connecting the negative to a lifting lug on the engine or some engine bay bodywork, but it has never worked for me- I have to resort to connecting directly to the battery. This is on several cars that I've jumped in the past. Why is this?

davepoth

29,395 posts

216 months

Monday 2nd January 2012
quotequote all
OlberJ said:
Did it run backwards?
I understand that the diode rectifier may well be able to "correct" the flow. It smoked quite a lot so it was switched off quickly. I don't think it can run backwards, it'd try and suck exhaust in.

Fleckers

2,878 posts

218 months

Monday 2nd January 2012
quotequote all
when they touched the leads there would have been a hiss crack welding type sound why in gods name did he not pull away immidiatly ?

bloke does cars alright, does them up like a kipper, tt