Speedometer Theory

[t_g_farrell]

Originally Posted by tweiss3

I say its not read by the transmission because while doing donuts (and spinning the rear wheels much faster than I was actually going) the speedometer isn't reading going any faster. Also, while going about 20mph through a parking lot, and pressing in the clutch and pulling the e-brake to lock the rear wheels, and effectively the transmission, the speedo still read my doing 20 at first and slowly decreasing to 0 when I had actually stopped.

That is what has me confused. I know my speedo is off by 5mph, but im not sure this is normal, or would be normal for a defective cable/worm gear

Unless your ebrake can lock up both wheels completely when you pull it your car
will still have at least one wheel turning and it will slow down gradually which
is exactly what your seeing with the speedo.