car computors & jumper cables

Hi there I was wondering just how using jumper cables to start a car with a flat battery could possibly burn out the car computor Is it an old wives tale??

The only thing I can think of is IF the battery has gone open circuit thereby making the volt regulation of the alternator not work properly This seems improbhable thou...

Reply to
S Roby
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Its very rare, and more myth than reality .. more-so applies to older cars .. ie, first generation with computers .. The connection of power as it comes through the jumper leads can make a spark as it connects, which can cause a spike in the wiring .. computers being sensitive to spikes and all, can sometimes be affected by this. Anything made in the 90's or better should definitly be protected in its own wiring from such actions, however .. But yeah, older ones can be a little susceptible.. but even then, its rare.. kinda like lightnig strikes actually blowing up TVs ..

Reply to
Lord-Data

That's one possibility (called a load dump), another is an electrostatic discharge.

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   Jasen
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Reply to
Jasen Betts

I've had a tv fail during an electrical storm, (but not explode).

Bye. Jasen

Reply to
Jasen Betts

Yeah, it can happen, but not every time there is a storm, as most people who pass on the myth (or sell surge protectors) will have you believe ..

Reply to
Lord-Data

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