Car is a 66 and I have owned I since 68. It is a 289 automatic and has a Pertronics I solid state ignition system. Turned off and removed the key and it kept running. Disconnecting the battery stopped the engine. Could it need a new ignition switch or do I have a problem in the wiring? Could the Petronics be the problem?
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Engine continues to run
- Thread starter Gas_Pumps
- Start date
Could be the starter solenoid. Next time it happens, pull the brown or green/red wire off the starter solenoid and see if the engine dies. If not, probably a bad ignition switch.
Mach1 Driver
Well-Known Member
Could be timing too
tarafied1
Well-Known Member
my 67 did that, it was the ignition switch in my case
With the Pertronics I it seems to start and run without the brown wire attached to the solenoid. Does that make sense? Also, an hour after it kept running everything appeared normal. It kept running in every position on the switch
janschutz
Corn Hauler
Was it running as normal? Usually to far advanced, it is running real ruff.
That's most unusual and means something is mis-wired for sure or a bad ignition switch. Is this a Petronix I, II, or III?
Get a new ignition switch as it is almost assuredly the issue. The Petronix isn't going to keep it running like you are seeing. You might also consider upgrading to at least an Ignitor II to gain some benefit of the improved functions.
Pertronics One. This is the first time this has happened in 20 years. Doesn’t the pink wire get connected even in the start position?
I will look into that. Thanks
It seemed normal and stopped immediately when I disconnected the battery. It was not Dieseling.
Doesn’t the brown wire only get full 12 volts when the starter solenoid is closed and the starter is running?
Yes, and it provides the 12V directly to the coil from the starter solenoid when the starter is running. When the starter is not running, the brown wire delivers the lowered voltage from the resistor wire to both the coil and the starter solenoid; the latter simply ignores the signal.
blue65coupe
Well-Known Member
I had the same problem and it was ignition switch. Easy test/fix.
Mach1 Driver
Well-Known Member
Yep, Joe is correct, and it's easy to test for- if it won't turn off, take the wire off "I" on the solenoid- the small wire on the right side. If it stops then the contact to "I" is welded closed in the solenoid.