Finding +and- on a cap

[_nick_]

Please do not ever do that. It used to be the case with older cars that you could start the car, then pull the battery. That is no longer so, and pulling the battery with the car running can create a bad situation for a lot of the electronics in a modern vehicle.

i did it just yesterday...car ran for 5 minutes with no battery until i switched it out. Ran just fine no problems to report....

[JoshMcMadMac]

i did it just yesterday...car ran for 5 minutes with no battery until i switched it out. Ran just fine no problems to report....

I have jumped off of a roof before, and I still run just fine...that does not make it any more of a good idea. The potential spike of removing and/or adding the battery can very easily damage some of the more sensitive electrical components on the vehicle.

[_nick_]

cant see how it would spike the voltage when a battery runs at a lower voltage than your charging system. There was actually a TSB for my old car that required disconnecting the battery while the engine is running to diagnose it.

[JoshMcMadMac]

cant see how it would spike the voltage when a battery runs at a lower voltage than your charging system. There was actually a TSB for my old car that required disconnecting the battery while the engine is running to diagnose it.

Just remember: voltage hurts, amperage kills. There is more to the equation then 12V DC.

[Sabrewings]

Just remember: voltage hurts, amperage kills. There is more to the equation then 12V DC.

True, but all of the components in the car are protected by fuses, which blow with amperage.

He's right that for a lot of issues in TSBs GM has recommended disconnecting the battery and reconnecting it as part of the troubleshooting. Wouldn't be wise to do that if you're going to hurt the customer's car.