|
The saga continues
I took a closer look at the actions of the gauges. What I have found is the bad behavior happens when the ignition switch calls for the bulb test. As long as you don't turn it to the start position the gauges stay totally normal. Hit the point where the bulb test occurs and the gauges go nuts. This will happen even with no foot on the clutch and no starter action. The temp gauge goes way past where it belongs and jams on its housing.
Looking at the wiring diagram there are two sources going to the gauge that seem to give it ground. The first is the sensor. But the sensor maintains enough resistance even at overheat so it doesn't peg the gauge.
The second ground source looks like it comes from the bulb test. That would seem to give it full ground. On the other hand there may be a solid state device there someplace to prevent that from happening. So far I see nothing.
AT this point I am in the "what is this" mode. I don't get this one. I have some more diagrams to paw over this evening. I guess that's tonights entertainment. Boring ain't it?
|