What happens when you hook up jumper cables wrong

I usually use a bolt on the intake, etc. This was two days ago, and my car is still running fine, just want to make sure there might be no "ticking time-bomb" damages Learn about new music!

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I think your friend needs a smack. Also, it was suggested earlier in the topic for you to have your alternator tested. I would suggest this as well. Existence is Futile Since all life is futility, then the decision to exist must be the most irrational of all. Do people seriously not understand "positive to positive, negative to ground"? It's really not hard to remember. Stop modding me, all my posts are reasonable.

Check the alternator, battery, starter, etc; all fuses and relays as well. So pretty much you hooked up jumper cables wrong. That's like turning down ice cream in favor of AIDS. Did your friend hook them up battery to battery? The clamps and the solder can melt because of the heat.

What Happens When You Jumpstart Your Car The Wrong Way: A Guide for Novice Drivers

Because of the high electrical current, which will be too much than what the parts of your car can handle, the alternator can also be damaged. When there is an issue in the alternator, the power that runs through the system will be affected. Your battery cannot be brought to life if you jumpstarted it the wrong way. Worst, you might need to replace some components of your engine system. From the short video that was shown earlier in the introduction part of this post, one solution is recommended — to change the fuse.

The fuse can get burnt because of the extreme heat resulting from the surge of electricity. You just have to select the fuse that you have to replace. In most cases, it is the powertrain fuse. In some cases, the fuse may not be the only one affected. In these situations, you will need to replace other parts of the car, including the alternator.

If the damage is severe and if it is the battery that has been affected, you will have no choice but to replace the latter. To prevent the problems that have been mentioned above, below are some of the most important things that you have to keep in mind:.

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When you jumpstart your car the wrong way, there are many things that could possibly happen. The battery, jumper cables, and electronics will be damaged, including the fuse and the sensors. There is even a risk of explosion when the problem is at its worst. Once you realize that you did the wrong thing, you can fix the problem on your own. In most instances, you need to check the fuse. Chances are, one of them is burnt. You can buy a replacement for this and your car will be up and running in no time.

Have you ever tried jumpstarting your car the wrong way? Circuits that are not normally related to the starting or charging systems may have been damaged by the fire or by feeding power thru the ground side of the circuit. I would recommend you have the electrical system evaluated by either the dealer or a shop that specializes in automotive electrical systems.

You may have damaged wiring that will be a problem later. Then send the towing company the bill. If your battery is running low that's why you can't start then you have less voltage across it's nodes. When you connect another battery with the exchanged nodes, the current will flow out of your battery since it's voltage is lower and damage the battery.

What happens if you connect the jumper cables wrong for a split second? : MechanicAdvice

Assuming your battery is fully depleted after some time, what will be left is a battery only one left connected vice versa to your car. Not every component in your car can withstand this some parts - like radios have a protection circuitery. Fuses can only limit the currrent flow, but not it's direction.


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By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service , privacy policy and cookie policy , and that your continued use of the website is subject to these policies. Home Questions Tags Users Unanswered. Can hooking up jumper cables incorrectly damage the electrical system of the receiving vehicle? Sandi Sandi 36 1 1 2.

Jumper cables 101 Disaster

It's a Jeep Cherokee Sport. Im not an expert, so take my advice with a grain of salt, but I think I can tackle this question: Jerreck Jerreck 6 8 The "professional" left the scene and us! I don't know much about engines, but I do understand a bit of electronics, and was wondering if it was possible that he created a huge power surge in the system. We trust the garage to get to the bottom of this, but it seems that everyone thinks it is a starter issue first-hopefully, they find something that we can hang on the first "professional".

At minimum, inspect the alternator and all wires going to it. Reverse-connecting a battery could put hundreds and perhaps thousands of amps through the alternator. I would not think it very likely to have damaged the starter motor, but it's possible some vehicles use a common fusible link for the starter and alternator. It's also possible that a starter may have an attached flyback diode, such that an attempt to crank the car with a reverse-connected battery would result in the diode passing all the current it can get.

That could fry the starter relay, though