ECU and Timing Question
I've just adjusted the timing on my 95 Civic (SOHC 1.6L PGM-FI). I
warmed it up to operating temp, jumped the 2P connector and checked the timing at 750 RPM. Then I made the necessary adjustment. I've had no problems with setting the timing, but I noticed something. I had supposed that the jumper was there to stop the ECU from "messing" with the timing, but that it was not necessary for *reading* the timing. Of course I checked and adjusted with the jumper on just to be sure, but I found that when the jumper is not connected, timing at 750 RPM is retarded by a several degrees. Is this normal behavior? Can anyone enlighten me as to why it does that? Thanks in advance. |
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