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I don't have any really manly stories about jumping a car. I did it for my girlfriend once who needed to get to class. And she thought I was her hero. So that was pretty cool.
A word of warning though - if push-starting a car, particularly on a slope, be sure to let the driver know that the brakes are servo assisted ie; they don't work too well when the engine isn't running!
If the car doesn't start and the hill is steep enough you could have a problem!
Boy, was I wrong. She headed towards the T3 which fired up with the howl of... something mighty, but not a small VW diesel.
Later I should find out that she's a mechanic like me and that that T3 she was driving contained a 3.2L V6 diesel with a custom fitted bi-turbo. All of which she fiddled together in her garage.
Lesson learned: Observe ppl for five minutes, before you judge them ;)
Why the need to run the “live” car? I have done this successfully many times without ever starting the live car. Once connected, the batteries are in parallel, so there shouldn’t be a need to start the live car. What’s the theory here?
The reason you'd want to have the live car running is to help prevent killing the battery on it when the other car starts. If you've got a good battery, probably no worries, but if you have - say the one in my truck that is at the end of its useful life, you'll be using the dead car to start the live one =)
And as a matter of disclosure, I don't work for them. Just a very satisfied customer.
You should also point out that if your car breaks down on the interstate, jumping the battery won't make any difference. If the battery really is dead, its because your charging system is broke and you've been running off of the battery until it was dead.
What I don't understand is why it's advised to connect the negative to the body instead of the negative on the dead battery. I've always connected directly to the negative, as the body _should_ be well grounded via the earthing straps to the negative of the battery anyway. The only time I've seen this issue is when there has been corrosion around the earthing strap terminals (all of them), and consequently the jump leads did nothing.
Is this why I had to replace my battery after just two years? Or was is the constantly playing with the lights and electronic sliding doors?
Next, how to rescue a stuck starter with nothing more than a hammer. If you go to start your car but have no luck (it won't turn over and it won't even click) but your accessories function fine, you may have a bum starter. If it doesn't work after jumpstarting (or bumpstarting for the stick drivers) then your starter may be stuck. Tap it lightly a couple of times with a hammer or other fairly weighty object and try again.
It's saved me a couple of times.
"Need a jump?", I asked, and proceeded to pull out my jumper cables.
"Oh, wow! Those are really good cables", the one guy said.
I thought nothing about it then, and proceeded to jump their vehicle off of my truck.
The problem was that I have two black cables to my battery and the battery is very old and grimy. I hooked up the red cable to what I thought was the positive terminal on my truck.
Both cars started smoking and I quickly removed the cables. Overall, the cars were connected incorrectly for 1-2 seconds. I swapped the cables and they proceeded to start the vehicle and drive off.
Two hours later, they came back to my house claiming that when I had reversed the polarity, it blew their master computer in their vehicle. A new computer would cost them $500 and I was obligated to pay at least half, they said. They brought along a second car of guys to try and muscle me.
Now, inside the house is my wife and four kids. Messing with me is one thing, but coming to the place where my wife and kids sleep is another.
How these guys managed to drive around with a fried master computer is a miracle, but that's beside the point. They were obviously lying and trying to scam me. I told them that I did not believe that my neighborly act fried their computer, and I did not feel responsible to assist them financially.
They disagreed, and one guy said, "hey can't you at least help us out with like twenty bucks or something?"
I told them I wasn't going to give them any money.
I also said they were entitled to disagree and perhaps we should have an officer come over and help us settle this dispute. At the suggestion of police, they backtracked and said, "We'll have our legal counsel get back in touch with you".
Right.
It turns out that their vehicle model and year has a computer that may only be repaired by the manufacturer.
Moral of the story:
There were many lessons to learn, but if it happened again, I would probably still give them a jump, but I would have them put the cables on, themselves.
Guess I need to man up and do it myself next time...
-doozieUp
http://doozieUp.com
At least the polarity is usually hard to confuse. Most cars either have a red cable going to the positive terminal or a red cap covering it.
I believe you are mistaken.
Sources on connecting positive first, then disconnecting negative first:
http://www.cartalk.com/content/features/roadsid...
http://autorepair.about.com/cs/doityourself/a/b...
http://www.edmunds.com/ownership/howto/articles...
http://www.safetycenter.navy.mil/safetips/a-e/c...
The color of the cable doesn't matter, it matters what color the clamps are. All jumper cable clamps are standardized in color-the black clamps are negatve, the red clamps are positive. You must connect the red to positive, the black to negative.
No. It does not mater. Electrons are colorblind. Just be sure to connect same to same (+ to +, and - to -). Its just a cable. I've used (large gauge) speaker wire to jump a car in a pinch.
Nice box you got there
If anybody knows different, do tell :D
B
A tip - if your diesel engine doesn't start because you ran out of fuel - a couple of sprays of easy start in the intake will kick it into life.
Another tip - sometimes your battery's so dead or cold that your car won't start even with a jump leads. I can help to leave the leads attached and the donor car idling away for 10 minutes or so. This'll give the dead battery a low charge and your call will eventually start!
Always run the donor car when jumping, you may need the power. A few revs don't hurt..
Another reason to have the 'live' car running is that then it's alternator is putting out 13.8 volts, not 12, thus the car in need of a charge will get it's charge faster.
In general you should not buy the cheap jumper cables, you should look for the best ones you can afford. Best as defined by cable gauge. The lower the gauge, the thicker the wire part of the cable. Thicker wire (not insulator, the plastic/rubberry coating on the wires, the faster the other car will get a charge from your car, thus making you have to stand there less time. There is no such thing as too low a cable gauge, the lower number the better, but beware, lower gauge means higher price.
Longer cables are better than shorter cables, presuming that they are of sufficient gauge... longer means that if you have to jump someone and get get as close as you would like (perhaps they are parked nose in and your batteries are on opposite sides in the engine compartment or something) then your longer cables will make the jump regardless.
Specifically, how to PROPERLY jump-start: http://jgdarden.com/batteryfaq/carfaq6.htm
Your owner's manual should give specifics as well.
You are mistaken. Please see my response to G. Lynn above. The link that Mechmike provided says the same thing.
i dont have jumper cables, but i do have acces to a friends car. i took out his batteries, hooked it up to mine after my batteries are removed, started the car, and then swap his batteries with mine again. then i just leave the engine running for about 30 minutes to charge my old battery. works with any type of car batteries...
On the battery, think addition and subtraction. A plus sign is also called a positive sign and is used when you are adding one number to another and a minus sign , called a negative, when you take away. Ergo the plus sign on the battery is the postive that you connect the red (hot) side of the cables to, and the minus sign is negative and are the place you attach the black side to.
What next, y'all don't know how to change the oil or the spark plugs?
Its been my experience that using SECOND GEAR gets better results and causes less gagging, skidding and lurching when you pop the clutch. Makes a smoother start and is probably less wear n tear on the car.
dv
The couple of times I have push started a car, I used first gear and it went smoothly. But I'm willing to concede that the consensus seems to be that it's better to use 2nd gear. Thanks for the feedback.
Dude, you swap out the batteries while the car is running?? Why does that strike me as a really, really bad idea??
;) So, swapping a car battery in a running car is about to magnitudes less fiddly :D
I have always been of the impression that RED does NOT have to be connected to positive. The important thing is that SAME color cable is on the same charge for each car, ie: both cars have red on +, or both cars have black on +.
Also, I have never had a problem with connecting the negative cable directly to the terminal on the dead battery... Never even heard of that.
Also, I've always left the good car running while hooking up the cables. Never had any problems. Haven't blown up any batteries yet.
1) The donor car should be RUNNING when the cables are connected to avoid discharging the battery before you jump the dead car.
2) The dead car's ground cable "should" be connected to the engine block because the starter is grounded in the engine block and it will have a better connection to start up the car. The dead battery or crappy grounds or small wires, or many other things can interfere with a proper jump start.
3) However I have never yet bothered to jump from anything but both cars' battery terminals except once when a minivan couldn't pull enough juice between the poles and I HAD to use the ground. It would be best to find an engine hoist point if you can find one.
And another important one
4) MOST manual cars CANNOT be push started because of a neutral safety switch. The clutch has to be pressed to the floor to start fuel flowing and EFI operation, it if it's not carbureted ...though some models have bypasses.
Oh, and if you ever are in extreme cold and your car apparently has a dead battery, try running the headlights for 30 seconds to draw a bunch of juice. It may be that the battery is SO cold it can't provide enough current and running the headlights may warm it up. I heard about this from some radio show (cartalk I think) who had people in minnesota and russia who would literally keep their batteries in their house at night to prevent problems starting.
In response to #4 on your list....
The neutral safety switch doesn't keep the car from firing or fuel from flowing .it just keeps the ignition switch from sending current to the starter while the car is in gear ,so you (or you wife) doesn't accidentaly start it with the clutch ingaged and in gear thus ruining the new drywall you just put up in the garrage. :)~
You are 'supposed' to connect the negative cable to the dead car to a bare engine part as a safety precaution. I've also read that you're supposed to wear safety glasses. I've never done either.
Today I think there are reasons not to remove a battery on a running car, but I very much remember doing this up till about 15 or 20 years ago. You could take the battery out of a running car to start another with no problem. Today, you may have a computer issue.
I once bump started a pick up at the bottom of a dip by jacking it backwards and chocking a wheel with a rock several times, and then bump starting it as it went down the 'hill'.
I had a dead battery about 2 years ago, and went to a neighbor's house to ask for a jump, but only their gardener was there, so I asked him. This guy was real chatty, and before I knew it he'd opened the hood of his little truck and pulled the cables off his battery. He carried the battery over to my car, that already had the hood open, with my cables ready.
When I tried to help him attach the cables he stops me and says to get in and try it. After a small discussion he jumped my car without cables! ---> He placed his battery almost upside down, it's terminals to my batteries terminals, and I hit the starter. <--- He's probably going to hurt himself someday, but it sure worked like a charm. I thanked him and he said that '...it's like this in El Salvador.' He had his battery almost upside down for just a few seconds. I saw no sparks and can't tell if any acid spilled on the car.
I don't think I'd try it, but It IS different!
.
second gear works nicely if you have a smaller engine, if it's larger you'll likely need to use a higher gear to overcome the compression. i've had to push-start my "fun" car (85 camaro) without the benefit of a hill to help out, it came to a dead stop in third from jogging speed. it started on the second attempt in fourth gear. and the battery was so dead nothing worked, no fan, no lights, no stereo. so it really doesn't take much.
I wish it had been a nice young woman with a dead battery (alas, it was a middle-aged guy), but it was still nice to be able to help out a person in need. As towns sprawl, people become more insular, and the bonds of "community" weaken, it's nice to have a simple/easy way to fight back and reconnect with those around you.
Keep up the good work and helpful posts!
Good to hear the jump start tutorial came in handy. Even better to hear there are men out there willing to stop and be the "Good Samaritan." Keep fighting the good fight.
Keep the good car running so it will provide more current through the jumper cables and won't be left unstartable by the drain.
And remember to stash a set of cables in your car because when the day comes when you need them, you won't be able to find any otherwise. Don't do it for yourself... do it for that unbelievably hot underware model in the Ferrari that won't start.
My sister and I were about to be late for work and the engine wouldn't start. One of my Geology professors had had this problem in college and a friend got a coke and poured it on the battery terminals. It tuurn out the carbonate build-up has a chemical reaction with the coke whichs puts off enough electricity to get the car started.
We tried it and it worked! Bearing in mind the car had been jumped off the night before by the campus police and we had driven around for an hour. I was told later the battery may have had a charge still in it from the night before.
Has anyone else tried this with success?
Red Bad to Red Good, Black Good to Black Bad. So Red first (bad to good), Black (good to bad).
Suggesting for the pictures: use the same car.
The coke trick can be helpful but the idea that it generates electricity is not correct. The Coke is reacting with and cleaning away the corrosion that has built up between the battery terminals and the battery cable clamps and this results in a better electrical connection and enhances the delivery of current from the battery to the starter. You can achieve the same result with a mixture of baking soda and water and this can be used as an effective terminal cleaner. Sometimes a "dead battery" is not just about low voltage in the battery, but partially or completely about poor connections (loose and/or corroded). The Coke addresses the connection issue.
I recommend you remove your battery cable clamps from the terminals and clean them along with the terminals thoroughly with the baking soda and water mixture, rinse well with pure water, dry and firmly reattach them. For extra credit you can then coat all the exposed metal of the terminal area with a battery terminal coating spray or vaseline to keep the corrosion out permanently. Good luck.
Along with jumpstarting a car, the other simple, essential car repair skill that a man should have is changing a flat tire. These are two skills my father taught me even before I could drive and they have served me well many times. I once found a friend walking home and I stopped to give him a ride. When he told me about his flat tire, I turned around and took him back to his car. He insisted his new car had no spare tire in it. He simply didn't know to lift the rug in the bottom of the trunk. He was also puzzled by the jack.
Guys, there is no excuse for this. If you have never changed a tire before, it's time to open up the car's owners manual and work through the procedure in your driveway. This is not the kind of thing you want to figure out when you are stranded, especially if it is dark, cold and raining. This might also be a good opportunity to check the tire pressure and toss in an extra flashlight and some old work gloves.
1. Cut a hole in a box.
2. Oh, wait, wrong steps!! I'm sorry!
Hey seriously, I have never been a "car guy," but when forced to jump a car without any help, I read the instructions that came with my cables. I then hand-wrote a shorter version of them on a piece of paper that I keep in my car. Now I'm a pro! I'm spoken for, so I won't be scoring any ladies with my new wisdom, but the girlfriend was mighty impressed when I got her up and running after she left the trunk slightly ajar all weekend.
I'm more of a man! :D!
Isn't it to make sure the live battery doesn't run out of juice?
Heather on October 11th, 2008 11:55 am
Does it work with Pepsy? Only kidding!
Dude: that's the manly story. The rest is noise.
I have a lot of experience with batteries and charging, both for auto and other things. Here's my two cents in response to questions above:
You want to put the negative (black) lead on the chasis of the dead car LAST. You put it on the chasis somewhere away from the battery because it will spark. A dead battery is a possible source of hydrogen gas and that spark could cause an explosion. Batteries are pretty safe these days but a dead/faulty battery is your best candidate for this type of problem so avoid the spark near the battery by connecting the black lead LAST and connect it to the chasis of the car a foot or more away from the battery.
The reason the good vehicle needs to be running in so that the alternator is working. The moment you make the last connection between the cars the batteries will begin to come to equilibrium. The voltage will begin to drop on the good battery and rise on the dead battery. It is possible to start the dead car without the good car running but it is risky in terms of ending up with neither car starting. For example, the battery on the good car may be at a good 14.2 volts while the dead battery is in the range of 5 volts. When the cables are connected the current will begin to flow to the dead battery and eventually it will reach an equilibrium between the two batteries at a voltage of about 9 or 10 volts, which probably won't allow either car to start. However if the good car is running, the voltage will be continually restored by the alternator. So the bad battery will charge without depleting the good battery.
Also I recommend a large gauge of cable which will allow large amount of current to travel rapidly to the dead car. Smaller gauge cable will limit the amount of current and it may take a few minutes after making the connection for enough current to travel across the connection.
Always be prepared to help your fellow motorists who become stranded and both parties will leave with a good feeling. Good luck and be safe.
Because the good car battery can go dead. It's the same as leaving the lights on; It's a drain on the battery.