All,
I have an interesting question for you today. My 1996 D1 (5spd) is currently experiencing an issue where my tach does not work at all. At idle, in gear, I do not see any movement regardless. However, when I turn the light stalk to parking lights the needle jumps to just below 1000 RPM and stays there. If I turn the lights on all the way the needle jumps to ~1300 RPM and sits there. Turn them off and it returns to zero. I can cycle it at will with the light switch, but it has no relation to actual engine RPM.
I have an ultragauge hooked up to the OBD2 port and the idle signal it receives seems accurate, which suggests the issue is not with the ECU. From my research (on this forum) it appears most tachometer issues in the D1 are related to a failing alternator since that is where the signal originates from, however since the ultragauge sees a good value I doubt this.
Anyone have any ideas about what to do besides check the cables coming off the alternator?
I have an interesting question for you today. My 1996 D1 (5spd) is currently experiencing an issue where my tach does not work at all. At idle, in gear, I do not see any movement regardless. However, when I turn the light stalk to parking lights the needle jumps to just below 1000 RPM and stays there. If I turn the lights on all the way the needle jumps to ~1300 RPM and sits there. Turn them off and it returns to zero. I can cycle it at will with the light switch, but it has no relation to actual engine RPM.
I have an ultragauge hooked up to the OBD2 port and the idle signal it receives seems accurate, which suggests the issue is not with the ECU. From my research (on this forum) it appears most tachometer issues in the D1 are related to a failing alternator since that is where the signal originates from, however since the ultragauge sees a good value I doubt this.
Anyone have any ideas about what to do besides check the cables coming off the alternator?