Wondering if someone is able to help me with the issue I am having with the speedo on my 310R.
When the speedo reaches about 70mph it starts to stutter then as I increase the speed the speedo just gives up and drops to zero, once I lower my speed to below 70mph the speedo springs back to life.
When I build the car in 2020 I installed the speed sensor with the earth modification wire to the rear ARB mounting bolt.
Not sure if it's the actual speedo causing the problem or the sensor, I've had a look at the sensor tonight and all looks fine and I'm getting the light beam switch on and off when I rotate the wheel.
Any ideas what it could be?