NO SPARK FROM COIL - Page 3 - MustangForums.com

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5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

NO SPARK FROM COIL

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Old 02-18-2009, 03:32 PM
  #21  
ctgreddy
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this coil worked fine before. and now it doesn't. so i borrowed one off of my buddys 87 and it didn't work. yet works fine on his.
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Old 02-18-2009, 07:57 PM
  #22  
mjr46
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so the coil isn't the problem then, is the dizzy installed properly??
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Old 02-18-2009, 10:45 PM
  #23  
ctgreddy
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i don't know how the dizzy could be installed wrong. even if i had it 180 off it would still cause a spark from the coil. which i'm not getting. I've talked to my instructor who is a retired master ford tech and he gave me a few tests to try, all of which passed. i'm completely out of things to try and will most likely tow it to a dealer.

everything i've checked so far.
checked power at stator.
checked power in and out of coil.
checked to make sure the tanish wire out of the coil "pulsed" when cranking.
checked power and grounds at ign module.
switched coil.
new distributor and ign module.
check to make sure my tach moves on cranking, so i've got tach reference.
double and triple checked all connections.
checked for continuity of just about every wire that is involved in the circuit.
unplugged capacitor.
unplugged spout.
checked all fuses in the system.
i have checked for continuity between the wire from the ign module to dizzy, that gives off the pnp signal. but I haven't checked to see if its pulsing while cranking since changing dizzy/ign module. will do that tomorrow.

Last edited by ctgreddy; 02-18-2009 at 10:56 PM.
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