spark probs...

mustang79 · 08-17-2002, 02:04 PM

79 5.0L basic.. well, a trik or 2.... but, bout as stock as ya can get...
ran 15.8 92 @ IRP a few years ago, but mostly rests now...has a spark prob... rums for bout 20 min & dies.. zero spark.. sit for 10., & its fires up lyke nuthin happened...may run anuthr hour or 2 minutes.. ya never know..did the coil swap thing, modules.. (twice) new ignition switch.. & no help...could it be the distrib?...the 2.8 had a bushing that would arc on the housing & cauz fits w spark.. but, these characteristics are quite different...

any ideas????

LX5liter · 08-18-2002, 10:35 AM

My first suggestion would be the ignition module, but you've replaced it twice already. Check, remove and clean all your engine and body grounds, you may have some corrosion there. Bad grounds can cause intermittent problems like yours as well. Post again with any results.

The car goes pretty good for a 79 BTW. The magazines best times with those cars were in the 16.8 - 17.0 range. Hope you get it running again soon!

08-17-2002, 02:04 PM	#1
mustang79 Registered Member Join Date: Aug 2002 Location: indiana Posts: 4	spark probs... 79 5.0L basic.. well, a trik or 2.... but, bout as stock as ya can get... ran 15.8 92 @ IRP a few years ago, but mostly rests now...has a spark prob... rums for bout 20 min & dies.. zero spark.. sit for 10., & its fires up lyke nuthin happened...may run anuthr hour or 2 minutes.. ya never know..did the coil swap thing, modules.. (twice) new ignition switch.. & no help...could it be the distrib?...the 2.8 had a bushing that would arc on the housing & cauz fits w spark.. but, these characteristics are quite different... any ideas???? __________________ "there be no pain known to man.. than that of a new or different idea" 79 5.0L stock as you can get ceptin for a few backyard trix that "dont work"

08-18-2002, 10:35 AM	#2
LX5liter dude5l Join Date: May 2001 Location: Grande Prairie, Alberta, Canada Posts: 603	My first suggestion would be the ignition module, but you've replaced it twice already. Check, remove and clean all your engine and body grounds, you may have some corrosion there. Bad grounds can cause intermittent problems like yours as well. Post again with any results. The car goes pretty good for a 79 BTW. The magazines best times with those cars were in the 16.8 - 17.0 range. Hope you get it running again soon! __________________ Good luck! Brad R. 1992 L.X. 5.0 coupe MODS: A few little bolt ons New Best time ...11.60 @ 128 mph @ 2000+ ft altitude. Rice Haters Club member #39 Users rides #2542

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