jump start?
is it ok to jump start another car with my vs v6 1995 commy?
Take it out/Take it Back
Yes.
(10 Chars)
Originally Posted by ari666
( .Y. )
Yes yes yes.. The jump starting a car with a computer myth should be put on the shelf nest to the Y2K bug and blowing up a Service Station with your mobile phone.
i usually have my vehicle switched off if im jump starting another vehicle to avoid any problems from sudden spikes on the system
Real cars are steel cars.
Myth?
Ive seen 3 or 4 cars have computer issues after a jump start.
Anything from engine ECUs causing poor running/no start to total failure of air bag system.
I will only use spike proof jumper leads.
99% of the time there is no issue.
If I told you I was a compulsive liar, would you believe me?
( .Y. )
Well a spike is always possible, I just always assume everyone knows how to hook up a car. I'll make a how to thread I think.
Ive jump started heaps of times over the years and have never had any problems.Its how you connect/disconnect the leads.Doesnt matter if they are spike proof or whatever.Its all gotta be done in the right order,also theres a couple of different ways of doing it.
Heres one way-Connect the positive jumper lead to both positive battery terminals.Doesnt matter what order you connect them up in.The negative jumper lead is always the last to be connected, and firstly goes to the negative terminal of the booster battery,and is then connected to the engine block of the car with the flat battery.Theres no need to start either car,just let them sit for 10 minutes with the leads connected,then disconnect the leads and try to start the car with the flat battery,if the discharged battery is not in too bad a condition,the 10 minutes should give it enough of a charge to start the car..If it doesnt start,then you try the second way.
The second way.Start the charged cars engine,and turn on the headlights to low beam,this helps stop any power surges by already putting a load on the charging system..connect the positive jumper lead to both positive battery terminals,doesnt matter what order they are connected up in,then connect the negative lead to the charged batteries negative terminal.Then lastly connect the other end of the negative jumper lead to the car with the flat batteries engine,somewhere where it will earth well to the engine block.This last lead is connected to the engine block instead of the negative battery terminal on the flat battery because of the risk of explosion from the hydrogen gas that batteries produce when being charged or used heavily.Anyway,once the negative lead is connected to the engine,away from any moving components etc,attempt to start the car with the flat battery,once it starts,carefully remove the negative jumper lead from the engine,then remove the other negative lead and then remove the positive lead.
i have jump started heaps of cars and tractor once without using a spike proof jumper leads, they seem to work fine if u know how to use em right, so in all honesty go to ur local kmart and buy urself a set of jumper leads for around 10 bucks, u wont have man yissues wit them!!!
i also leave my engine running as to make sure my battery doesnt end up being dead wen tryin to start another car, it would look really stupid if u tried to jump anotehr car and ur battery dies
Real cars are steel cars.
Guys,
There is always a minimal risk of voltage spikes when jump starting cars, no matter what order or how the leads are hooked up. I have connected a $30k oscilloscope to a battery just to show what the spike looks like when disconnecting jumper leads. The issue is whether or not the spike is big enough to cause any damage to electronic components. This is also why diodes are fitted to some relays.
Like I said above, 99% of the time the is no problem.
Do you want to be the 1%?
You should leave both cars connected for a few moments to ensure the flat battery has enough output to excite the field in the alternator.
The $10 jumper leads are rubbish.
Pull back the insulation and see how thick the copper conductor is. The only reason they work is most of the time the flat battery still has current left in it, just not enough to turn over the engine.
Good quality leads will have copper wire almost as thick as your little finger and anti spike as well.
If I told you I was a compulsive liar, would you believe me?
Tells it like it is.
I have personally done it hundreds of times with zero failures. Connect the leads in the correct order and chance of failure is just about zero. I don't even own a set of spike proof leads.
Reaper
( .Y. )
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