Originally Posted by Bard
Close, they are external regulators. Jeep had a few years where they did this. I know people have bypassed this and upgraded to a newer alt, say 83 up to 86. They key is to replace the solenoid, coil and alt with a higher voltage, so it won't melt. Not sure on the distributor and cap. Someone else can chime in.
Funny my 76 had an internal regulator as did all the 258's afterwards. Only the V8's had external regulators on the alternator. Just look at a schematic. By 1980 all the alternators, V8 or I6 were internal.
What may be puking it's guts out may be Idle Speed Switch.
Does it look like one of these:?
The Idle Speed Switch would kick up the RPM if the Electric manifold heater or AC compressor was engaged. If you took it off your RPMs would not change and may drop low when there was any load on the alternator.
Originally Posted by BeesJeep
So the 81's had an external regulator? Where can I get a new one? The parts catalogs do not list this.
They don't exist for 81 CJ's. That's why they can't find them.