[Vwdiesel] idle switch, diesel leak, oily engine block

[Val Christian]

> LOPAB uses oil pressure and  tach, and keeps quiet below 2000rpm, but opens
> the gate for alarm above 2000rpm if the oil pressure drops below a set
> limit. If you have never heard it, the first time it sounds off, you will be
> very puzzled by it. It is barely audible above cabin ambient noise, hard to
> tell where it's coming from,  and is most likely to sound if you are lugging
> along at 2001 rpm with thin oil and hot engine. It sounds like an old alarm
> clock buzzer with laringitis. Most of the circuit is on the biscuit behind
> the speedo. Mine will buzz occasionally when I'm towing my snomobile up a
> shallow grade in 5th, in winter, with thin oil, and I should realy
> downshift. Never seems to happen any other time, (summer oil?)
> 
> The LOPAB may only be used on turbos.

	It's on the NAs that I've owned from 1980 to 1991.  I don't
	remember it on the 78s or 79s.


Val