Been logging my fueling lately & captured the moment when I revved by alternator to death. Note the erratic voltage readings & the decay after the voltage spike:



After this, I fitted a new alternator but noticed the following in subsequent logs: The voltage is much more stable but there are the occasional dips & spikes. Look at that coolant temperature & the dip in the throttle pot voltage.

I am wondering if anyone else is experiencing this. There has to be a common fault somewhere.