Arthur,

I disconnected the battery and changed the brake stop switch. I reconnected the juice, cleared the codes, and took her for a ride.

I stopped a couple of times to turn off the engine. The CEL came back.

Code 20 from built-in led. I checked the codes when I got home and this time, in addition to the code 9 in pin 14, I also got code out of pin 8. They were 28 and 40.

I hadn't gotten anything out of pin 8 previously, perhaps it's because I disconnected the battery? What are these?

If I do have a bad hall effect sensor, I guess I an live with it until I find a used speedo.

Time to get out the black tape.

Thanks,

Charles