I sure hope that some of those diehard Miata mechanics can help me. Today I was driving my 1990 Miata down the road, depressed the clutch and felt something hit my foot. Further investigation indicated that this was a green disc (or rather the remaining pieces of a green disc). Also I notice that when I barely begin pushing in the clutch petal I heard a click and just as I released the pedal I heard the same single click again.
Laying upside down with a drop light I noticed that there are two sensors for the clutch pedal. There is of course the safety sensor when the clutch is fully depressed, which requires the clutch pedal to be fully depressed which allows the engine to start. The one I am interested in is the sensor located at the top (closest to the driver) which appears to engage somewhat when the clutch pedal is fully released. What I found unusal about this sensor is the clicking sound was occurring when the tip of the retractable sensor was lining up with a hole on the pedal when it's fully released. I'm wondering if the green disc was suppossed attach via the hole and depress this sensor.
I did some quick research and I can not determine what this sensor is for. I am guessing that the plastic disc is suppossed to depress the tip of the sensor, otherwise the sensor seems to serve no purpose. Nor can I find a part to order to replace the broken part. Any help that could be give to help me get this resolved would be appreciated and any direction that could be given to locating a replacement part (with or without a part number).
Thanks in advance for your help!
Signed -- David (Birmingham, Alabama)