My engine will not start?

1970 CADILLAC DEVILLE
73,000 MILES • V8 • 2WD • AUTOMATIC
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JENNFLETCH70
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it will not start, it doesn't even turn over. we had the starter tested, bought a new solenoid, and rewired it, but that still doesn't help. someone said it could be a neutral safety switch, but i can't find one at any auto parts store. when you turn the key you can hear a faint click when sitting in the car, but you can't hear it under the hood. we did a bypass on the starter,the solenoid, and everything else we could, so the battery is putting out juice, but not connecting somewhere along the way to the starter. a lot of the parts in it are original so it could be some 38 year old part gone bad. i would really appreciate your help, thank you for your time.
Jun 30, 2008 at 4:53 PM
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RASMATAZ
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Test all the fusible links on the starter motor battery terminal-if okay check for power at purple wire on the solenoid while key is at start position-No power could mean the NSS or the ignition switch starter control circuit-
Jun 30, 2008 at 5:02 PM
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KGOODWIN32
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I have the same problem, were you able to get it started?
Dec 5, 2011 at 3:21 PM
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CADIEMAN
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the neutral switch is on the lower steering column.its on the top with 2 vacuum hoses to it.if their is no power at the purple wire.check the voltage at the neu.switch.
Dec 5, 2011 at 3:50 PM
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KGOODWIN32
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Thanks for the quick reply cadieman, I'm sorta a newbie at this. Would you happen to have a picture (illustration) of the location and what to look for?
Dec 5, 2011 at 6:47 PM
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KGOODWIN32
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Kudos cadieman, that's it! I found it, it was coming apart. I tried to fit it back together but the to copper clips and a spring came out. Where do I find this part? Is there some sort of retrofit available or solution? Thank you so much for your time!
Dec 6, 2011 at 4:06 AM
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CADIEMAN
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if i remember right you can push those clips back in to tighten the switch back up.it has 2 clips.then you adjust it to start in park and neutral.if it wont call a a/c delco parts store and see if they can order one.all so call the dealer and see if they can order one.gl thanks for using 2carpros
Dec 6, 2011 at 3:52 PM
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POPSECRET
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won't start it only makes a clicking sound. I have a 1970 Cadillac with a brand new battery, brand new starter, and a brand new voltage regulator. I am trying to find out where is the relay switch is located.
Jun 16, 2021 at 7:48 AM
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STRAILER
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I would use a breaker bar on the front of the engine to make sure the engine is not locked up. This guide can help and I have included the wiring test guide so you can see fi everything is getting power:

https://www.2carpros.com/articles/starter-not-working-repair

and

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Please run down these guides and report back.



Jun 18, 2021 at 12:58 PM
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