I'm in the process of rebuilding my rear duovalve assembly in my 95 S600. The left rear duovalve (A31/1y1) coil winding was open. I took the assembly apart, and measured the diameter of the coil wire at 0.0144 inches. The closest I can translate this to in AWG size is 28 gage HML magnet wire. Total turns was 1, 150. Total DCR of the original coil is 15.4 ohms. After removing the old wire and winding new wire on the bobbin, I get a DCR of 17.7 ohms. This is a 12.99% difference from the original winding. I am assuming that this difference is because the wire size is not 28 gage, but a metric size close to 28 gage. This concerns me. A difference of 10% wouldn't bother me so much. Since this system is logic controlled, I assume that the position of the duovalve plunger can be infinitely adjusted within it's limits. If the coil DCR is off by 13%, I am concerned that the plunger may not be positioned correctly during operation. Does anyone out there have a good understanding of the duovalve operation to tell me if this will cause a noticeable difference in performance?

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1995 S600, 1 of 618 (sold)

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