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'66 Ambassador no spark again |
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PHAT69AMX
AMC Addicted Joined: Jul/07/2007 Location: West Virginia Status: Offline Points: 5903 |
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Ignitor I & II use flying magnet, ring mounted under rotor, should shim dizzy for limited endplay.
Ignitor III is a prox switch tripped by dizzy shaft cam lobes, like Crane XRi,
checking / shimming dizzy not necessary.
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Trog
AMC Apprentice Joined: Nov/08/2007 Status: Offline Points: 156 |
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Great information guys! I found the NSS under the dash easy access and should be able to get it all checked out by this weekend. And I see NSSws are availabe if I need a new one.
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farna
Supporter of TheAMCForum Moderator Lost Dealership Project Joined: Jul/08/2007 Location: South Carolina Status: Online Points: 19611 |
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Easy test: connect the two wires together, bypassing the NSW. Remember, the brown wires are the back-up lights! Connect the other tow together.
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Frank Swygert
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Trog
AMC Apprentice Joined: Nov/08/2007 Status: Offline Points: 156 |
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Closure! Fau;ty Neutral safety switch as I pulled the two green wires from the switch terminals, hooked them together with the ignition-to-coil wires back on and the car started and ran.
Thanks for all the help.
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purple72Gremlin
AMC Addicted Charter Member Joined: Jul/01/2007 Location: Illinois Status: Offline Points: 16591 |
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farna
Supporter of TheAMCForum Moderator Lost Dealership Project Joined: Jul/08/2007 Location: South Carolina Status: Online Points: 19611 |
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The NSW is wired on those cars to prevent starting and running -- it interrupts power to the coil (switch-NSW-coil). When he bypassed the NSW with a hot wire directly to the coil it would start and run (that's what made me suggest the NSW). Maybe later models are wired differently? I know some in the mid to late 70s have an extra post on the solenoid that has to be grounded for the engine to start, and I think the NSW supplies the ground.
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Frank Swygert
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69 ambassador 390
Supporter of TheAMCForum Joined: Nov/22/2009 Location: Peoria, AZ Status: Offline Points: 3539 |
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Thats why I asked about the third post on the back of the solenoid. I had one of those give me fits. I didn't know it went to the NSW though. Ya learn something every day.
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Steve Brown
Algonac, Mi. 69 Ambassador sst 390 84 Grand Wagoneer 69 Cougar XR7 65 Fairlaine 500XL 79 F-350 Super Camper Special |
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purple72Gremlin
AMC Addicted Charter Member Joined: Jul/01/2007 Location: Illinois Status: Offline Points: 16591 |
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Trog
AMC Apprentice Joined: Nov/08/2007 Status: Offline Points: 156 |
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Since this is a temporary hookup, I did not drive the car but just let it idle for a few monents. On a couple older cars from the 50s, the switch is totally bypassed and the only effect is it will start in drive or reverse as well.....no effect on running or driving.
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farna
Supporter of TheAMCForum Moderator Lost Dealership Project Joined: Jul/08/2007 Location: South Carolina Status: Online Points: 19611 |
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The whole purpose of the NSS is to prevent the car from starting unless in park or neutral. Older stick shift cars don't have one, just a back-up light switch. It wasn't until the later 70s that there were some cars equipped with clutch switches.
Well, some older cars had such safety features before they were mandated by the government though. The push-button shift Ramblers, for instance. You turned the key switch to "run" but there was no start position. The Neutral button had to be pushed to start the car, so it could only be started in neutral. Park was via a separate lever under the dash with a cable to a separate arm on the trans. The car could be started in park, and one could start to drive off while it was still in park too! A few broken parking pawls... |
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Frank Swygert
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