Bad ignition? - Impala Tech
Electrical & Wiring Troubleshooting electrical problems

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post #1 of 3 (permalink) Old 06-29-2020, 10:41 AM Thread Starter
Join Date: Jun 2020
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Bad ignition?

Have a 68 impala and it has always drained the battery. The previous owners did say to be careful when shutting off the car that the key would go to accessory mode and not the off position that there was a sweet spot. I have always been careful but I feel like a new ignition would solve the need to find the sweet spot. And of course the battery keeps getting drained even after I'm in the supposed sweet spot.
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post #2 of 3 (permalink) Old 06-29-2020, 11:59 AM
Join Date: Aug 2008
Location: Miamisburg, Oh.
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Agreed, and not uncommon that a new ignition may help there.

If you are handy with a multi-meter or a simple 12V power checking tool (beeps and a light flashes) you could just test at the upper left of the fuse-box when you think the key is actually Off in that sweet spot. There should be NO power on that fuse box spot and you could even jiggle the key to test what the guy was telling you.


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post #3 of 3 (permalink) Old 06-29-2020, 12:58 PM
Join Date: Jan 2006
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The contacts in the ignition switch are a lead alloy. Even being alloyed with other metals it is still a soft metal, and wears with time. since factory designed it to last at least SEVEN years if it still works fifty years later you have gotten your money's worth out of it. The seven year life span was dictated by capital goods rules from the IRS. That, and GM wanted you to buy a new car; and you wouldn't be motivated to do that if your old one was still running. So yes there was planned obsolescence.

Big Dave
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