ImAwesome

my car was boosted with a 24v golf cart (not by me).. i paid the bill to have the car repaired... my bro (the guy who boosted the car).. said "i touched the cable to the battery, i heard a pop.. and that was it. I paid the bill which was upward of 9K... but it seems

what happened to my car is impossible.(it is still a cpo car) Well according to the bentley. Even with the 24v charge..If you go to page Y621 in the bentley is shows a voltage regulator at position C1. This is wired in such a way that even with the key in the accessory position it should be able to stop the cahrge. Or get fried and stop the charge. Both the A17 and A86 circuit are forced to go through this voltage regulator.

Could anyone explain how it's possible that a golf cart at 24v would be able to fry my car? specifically how the charge would be sent through to the whole system.. here is a picture of the receipt
<img src="http://i48.photobucket.com/albums/f230/imawesomea4/IMG_0460.jpg">

now the thing that gets me is simple... why would wires be rubbed through?

anyways back to bentley... am i wrong? Am i seeing something that isn't there? The car should not have failed to the extent it did. The relays/fuses maybe.. but that's at most. The car should not have allowed the charge through the system according to that diagram.

avincar

I haven't looked at the diagram.

But cars are designed so that the alternator is the ONLY source of charging to the battery.

The battery physically can't deliver more than 13.8V or so. How the plates work. So there's no need for any sort of regulation device to control the voltage delivered by the battery - ONLY by the alternator - since its output goes up and down.

The regulator is on the output of the alternator, between the alternator and the battery.

If you "jump" voltage directly into the system, the regulator can't save you - it's on the wrong side of the battery!

This is why we never should have cut vocational classes in high school...

HIS4

Normal charging voltage is only 2 or 3 volts above battery voltage. A higher voltage than that will proceed to fry your battery and the rest of the electrical system for your car. Most 12V equipment is only rated to handle 15-16V at most. After that...crispy!

avincar

But was I correct about the value of HS auto shop?

Sal R.

My lil bro doesn't know how to change a tire.

Called AAA.

A6turbo530

i couldnt imagine what id do without my autoshop class... some mornings its the only thing that make me want to get up at 6:30AM. honestly ive learned more **retainable** knowledge in that class than i have in ALL my other classes combined. im not a dumb kid (3.6 GPA woohoo!) but the day after the history test i dont care about which treaties did what... on the other hand in autoshop i learn how to diagnose and treat actual problems. thats a way of thinking that can be applied to more than just cars IMO... not to mention i have friends that cant check air pressure in their tires and its just sad.

i believe there are about 5 public schools in NJ with full operating autoshops/autoshop classes and im lucky enough to go to one of them. however the teacher of my autoshop class is retiring at the end of this year and the "board" is looking to do some budget cuts (as in cut the autoshop and wood working classes). even though ill be graduating this year its really sad to see this happen... hands-on classes like autoshop and wood working are just as important as history and math IMO...