I noticed, that when at idle, at operating temp, that loading on electrical
accessories such as high beams, and/or front and rear fans, tends to make my
idle cycle in a very sine wave like manner.  As soon as the lights are
dimmed, or other electrical load is removed, it goes back to a very smooth
idle.

Does this sound like a familiar problem to anyone?  I could not find
anything in the recent archives about it.
Jeff Hartman
Juneau, AK
86 Vanagon