I recently performed a full tune up on my 427/390. I used a hotter spark plug as recommended here in this NCRS forum, new points, etc...but am experiencing a problem that I didn't have before: The car is having difficulty starting. Running a 12volt tester on the alt, shows a good reading but not so at the coil. I jiggled the red coil lead wire and low and behold, the 12 volt light went bright...
About an inch to so from the end of the lead, I noticed that the wire beneath was thin as though crushed and I then re-spliced the wire and reconnected to the coil...the test light was bright and the car kicked right over...
After a day or two, I went to start the car, and again same starting problem...12 volt is bright at the alt but no reading at the coil....When I leave the ignition key in the "start" position for about 1 minute, the red lead wire at the coil is running hotter, signaling a bad wire/short or whatever...but can there be an open there from a cutoff?
Is there a built in cut off in 1969 427/390's as part of the alarm system installed in the car? I checked the owner's manual and service manuals and can't get any info on this system...It seems as though there is a cutoff somewhere, but I cannot find it....Thoughts on what this could be? Where I should test first or sequence to solve the problem?
The "firewall" wiring appears to be original but the secondary wiring, like at the alt, appears to have been replaced more recently...Suggestions are appreciated....
About an inch to so from the end of the lead, I noticed that the wire beneath was thin as though crushed and I then re-spliced the wire and reconnected to the coil...the test light was bright and the car kicked right over...
After a day or two, I went to start the car, and again same starting problem...12 volt is bright at the alt but no reading at the coil....When I leave the ignition key in the "start" position for about 1 minute, the red lead wire at the coil is running hotter, signaling a bad wire/short or whatever...but can there be an open there from a cutoff?
Is there a built in cut off in 1969 427/390's as part of the alarm system installed in the car? I checked the owner's manual and service manuals and can't get any info on this system...It seems as though there is a cutoff somewhere, but I cannot find it....Thoughts on what this could be? Where I should test first or sequence to solve the problem?
The "firewall" wiring appears to be original but the secondary wiring, like at the alt, appears to have been replaced more recently...Suggestions are appreciated....
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