Whilst running the V4 up the temperature this afternoon I noticed that the voltage regulator was up to temperature too, too hot to comfortably touch. So I took a look at the battery and was measuring just over 17 volts... My multimeter is fine, its had a new battery recently and done fine on the other cars... I pulled the regulator, look good, no charring or burnt windings. The points did look corroded So gave them all a zap with some emery cloth. Made no difference. I shall test the alternator output tomorrow if I get the chance but judging by the heat the regulator was producing that is the culprit. So is there a direct off the shelf replacement? I noted also that I could neither hear nor feel the points opening and closing So I guess the are stuck in a position to over-charge the battery. At any rate 17V should be about 13.5V.
Saab 96 1971 Datsun 120y coupe 1975 Saab 9000 CSE turbo 1993 VW T5 LWB 2012
This might explain your "carb" issue. You can still get them new from Bosch, but they're very expensive (£150-ish iirc), and I think there are specialists who can fix them. Cheaper to fit a 900 alternator with built in regulator either way I suppose.
Depending on the age of the alternator, its possible to fit a combined regulator and brush pack from the larter (900) alternators to earlier units. I landed up doing this on my 99 years ago when it started blowing its headlight bulbs at high revs...
AC Delco E695 is a solid state replacement regulator that perfectly fits the 50a Bosch alternator (20$ at Rokauto's). They also carry other regulators for different outputs (35a & 70a, I believe). It is simpler to do the search for a 99 model. Nice evening to all.
Topic 
High voltage.
Posted - 26 Sep 2020 : 18:44:54 
