HELP! Battery/electrical issue - car keeps dying.

Originally Posted by Rusty I've done this with older cars. Never with a newer one. If the voltage drops below 9.5 volts. Most ECU's will shut down. Yeah its one

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HELP! Battery/electrical issue - car keeps dying.

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10-08-2017, 08:10 AM

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OhioYJ

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Quote:

Originally Posted by Rusty

I've done this with older cars. Never with a newer one. If the voltage drops below 9.5 volts. Most ECU's will shut down.

Yeah its one of those things we all used to do, but on modern cars with all the electronics its a really bad habit. It sends spikes through the electrical system. I know Chrysler / Jeep systems are bad examples of this, many of these will go to 20 plus volts, some just sit there at this voltage with bad batteries (or missing batteries).

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