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Old 01-08-2009, 02:58 PM   #1
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1990 mustang 5.0 weak spark at coil no spark at plug new plugs,dist.cap rotor button ,coil module, wires. Ohm out module check all voltages ,grn. Still no spark at plugs weak spark with dist. To coil lead grounded
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Old 01-08-2009, 03:06 PM   #2
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did you ohm your ground wire, or just check with test light?

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Old 01-08-2009, 09:06 PM   #3
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What about the pickup in the distributer?
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Old 01-09-2009, 03:07 PM   #4
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Bad secondary power ground ,loose computer power ground , Bad EEC relay what color is the spark? a bright orange indicated a weak spark. blue orange means a good spark. a blue white spark knocks you ON YOUR ***

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