I haven’t had the speedometer working correctly since right after installing the 3 speed. Shortly after installing the 3 speed, I noticed it would read much faster than I was actually going. That, in my mind, was a whatever sort of thing, until I realized that it would mean miles would go up a lot faster as well. I “fixed” it in a way that it no longer gave me the speed…
Anyways, I bought a drop in speedometer sender on the ‘bay that for every revolution, I would get 16 pulses. My thought is to use an Arduino, LCD, and SD Card to create not only my own speedometer, but odometer. The stock Speedometer in the Mustang only shows the total miles, there is no trip-odometer. I know the pulses per revolution of the sender, I know the speedometer gear that is attached to it has 16 teeth, and the speedometer gear on the output shaft of the T5 has 6 teeth. I also know that the rear end has 3.55 gears ( as I was the one to put them in!). Know I just need to figure out the math, and put the circuitry together.
My end goal is to have sort of a computer system in the Mustang. The system will feature:
- Speedometer
- Odometer
- Trip-Odometer
- Oil Change Notification
- Air/Fuel Ratio
- Engine Temp
- Ambient Air Temp
- MAF possibly
- Oil Temp/Pressure
- Fan control (Engine Fan)
- Clock