Weak spark from coil!!

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Dec 31, 2010 | 02:51 PM

Ashie93Z28

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Joined: Dec 2010

Posts: 3

Weak spark from coil!!

My 93 Z28 has a new opti , and coil. Yet there is still not enough spark coming from the coil to even start. Anyone have any suggestions?

Dec 31, 2010 | 03:27 PM

Guest47904

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Joined: Sep 2004

Posts: 0

Re: Weak spark from coil!!

Connection issues between pcm and ICM or ICM and coil. Could be the ICM. What problem caused you to replace the OPTI?

Dec 31, 2010 | 08:55 PM

camarorz28

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Joined: Jun 2006

Posts: 51

Re: Weak spark from coil!!

have you ohm the coil? could be a bad coil. check the primary and secondary with a voltmeter. If your getting spark after to the distributor from the coil , your coil must be bad.
http://shbox.com/1/coil_testing.jpg

Jan 1, 2011 | 03:59 PM

Ashie93Z28

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Joined: Dec 2010

Posts: 3

Re: Weak spark from coil!!

The opti was replaced because of stuttering and surging issues and generally inconsistent performance before she died. So new opti and coil, haven't checked the ICM yet.