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How to check coil output?

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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.

How to check coil output?

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Old 12-19-2007, 10:44 AM
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94Blk5.0
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Default How to check coil output?

I will be checking my TPS voltage soon, and thought I might as well see how the ignton is doing.

1. How do I go about checking the coil output with a volt meter?
2. What is the ideal output?

Thanks a lot.
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Old 12-19-2007, 11:42 AM
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Joel5.0
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Default RE: How to check coil output?

Why would you want to check the TPS if the system doesn't have a TPS failure code logged? .... you would need a scope to check the coil output in kV's.
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Old 12-19-2007, 11:51 AM
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mjr46
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Default RE: How to check coil output?

without a scope about all you can do is check power to the coil and perform a resistance check via a ohmmeter or if you want to see if the coil is putting out spark pull the wire to the dizzy and place a spark checker inline...that'll indicate whether or not you have spark but not strength of it
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Old 12-19-2007, 12:51 PM
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r.barn
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Default RE: How to check coil output?

Stick your tongue on it and have a friend turn the car over.
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