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Old 11-02-2010   #1
QB93Z
 
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Join Date: May 2007
Location: Westminster, Maryland
Posts: 3,684
Question Taking Readings on Coils

I replaced the coils in my 1993 ZR-1 (110,000 miles) a few days ago. I did not have a specific coil failure. I am simply upgrading components to see if it makes a performance difference.

Now I am doing a research project using the take-out coils.

I have measured the primary and secondary resistance of all the coils to save as comparison data. For the primary side reading I had to insert a spade terminal into the slot to get a reading:


On the primary side I got:

1-6 .9 ohms
4-7 1.0 ohms
5-8 1.6 ohms
2-3 1.5 ohms


Then I measured the seconday coil resistance:


1-6 5.7 Kohms * Note: these are corrected values based on proper meter settings
4-7 5.6 Kohms
5-8 5.7 Kohms
2-3 5.6 Kohms

One thing that I noted is that when I measured the secondary coils resistance, the ~2.5 Kohm reading only was measurable for a second, then the reading went to open circuit:


Now my questions:

Do these readings seem normal?

Has anyone else tried to measure the secondary coil resistance and gotten the change to open circuit indication after a second of measurement? Could it be a function of the digital meter I am using?

Jim

Last edited by QB93Z; 11-03-2010 at 08:52 AM. Reason: correct the Secondary coil readings
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