66 Mustang Stalls After About 5-10 Minutes - Page 2 - MustangForums.com

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Old 10-21-2013, 02:43 AM   #11
Gun Jam
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when it dies pull the boot of the coil and place a wrench above the coil and to a ground.
Crank the engine over and see if you get a spark to jump from the coil to the wrench.

Test it before the engine dies and compare.

Im with stepman on this one. I had an MSD box fail something like you described. The MSD has a self test feature to track down these issues not sure about yours.
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Old 10-23-2013, 02:47 PM   #12
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Just don't be holding the wrench when you're doing that.
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Old 10-28-2013, 02:19 PM   #13
Join Date: Jan 2009
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Sounds like my old ignition module. Would be running fine, then BOOM...dead as a doornail and wouldn't crank. Let sit for a few minutes, it cools down, and off to the races again. My grandfather said in a pinch I could put ice on the box to cool it down and get it running but I just straight up replaced it before it happened again. It wasn't a mallory kit though, so can't really speak to them with authority...just hearing exactly what happened to me.
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