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-   -   How much damage did I do to my car? (http://986forum.com/forums/boxster-general-discussions/83438-how-much-damage-did-i-do-my-car.html)

Stevenson927 05-22-2023 01:15 PM
How much damage did I do to my car?
 
Pulled my '99 Boxster out of the garage for the summer. It was dead. Bought a new battery. Stupidly installed it backwards. It still would not start and so I tried to jump it. Spark!

Did I just short out a fuse, or could I have done major damage to the car? Argh!

Thanks.

JFP in PA 05-22-2023 02:15 PM
Probably at a minimum, you smoked the alternator, but the damage can extend further as the DME and several sensors do not like reversed polarity. .

seningen 05-23-2023 08:41 AM
Quote:
Originally Posted by Stevenson927 (Post 653364)
Pulled my '99 Boxster out of the garage for the summer. It was dead. Bought a new battery. Stupidly installed it backwards. It still would not start and so I tried to jump it. Spark!

Did I just short out a fuse, or could I have done major damage to the car? Argh!

Thanks.
Install it correctly -- and see if it fires up -- and check electrical functions.

Bush Pilot 05-24-2023 11:46 AM
Agree. A reverse polarity of 12V isn't huge and it's probably OK. When you connected the two batteries together the way I think you did, I'm thinking that you applied 24V to the electrical system for a short time and I have no idea what the consequence of that is. Don't beat yourself up over it. This is how we learn.

JillsPorsche 05-29-2023 07:49 PM
Quote:
Originally Posted by Bush Pilot (Post 653418)
Agree. A reverse polarity of 12V isn't huge and it's probably OK. When you connected the two batteries together the way I think you did, I'm thinking that you applied 24V to the electrical system for a short time and I have no idea what the consequence of that is. Don't beat yourself up over it. This is how we learn.
Indeed. Look at like this...there is absolutely no way you will make that mistake again!


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