Coil Resistance Reading
citydragon
06-17-2006, 04:30 PM
1986 Camaro 2.8 MFI
I have no spark, I tested the ignition coil with a multitester, on primary resistance. I got a reading 0.0 ohms, the manual states it should be approx 1.0 ohms-(if higher replace the coil).
On the secondary resistance I got a reading of 11,600 ohms, the manual states between 4,000 to 10,000 ohms (if above 40,000) replace the coil.
If primary resistance is below 1.0 ohms (my reading 0.0 ohms) and secondary resistance is just above the range but not anywhere near or above 40,000 ohms does this mean a bad coil??
Can someone clarity to these readings for me. Thanks
I have no spark, I tested the ignition coil with a multitester, on primary resistance. I got a reading 0.0 ohms, the manual states it should be approx 1.0 ohms-(if higher replace the coil).
On the secondary resistance I got a reading of 11,600 ohms, the manual states between 4,000 to 10,000 ohms (if above 40,000) replace the coil.
If primary resistance is below 1.0 ohms (my reading 0.0 ohms) and secondary resistance is just above the range but not anywhere near or above 40,000 ohms does this mean a bad coil??
Can someone clarity to these readings for me. Thanks
wrightz28
06-19-2006, 12:42 PM
If you are confident with your test results and verified them a few times, the primary resistance being 0 ohms would indicated it is shorted.
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