Re: [T3] Oil Light Question

[Greg Merritt <gregm@vwtype3.org>]

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	At a stop in drive (well, "3", right?), do you find that the 
idle speed increases, then decreases, then increases, etc., 
oscillating back and forth between lower and higher speeds?  I 
suspect that it is, and that when the idle speed swings low, it goes 
low enough for the oil pressure to drop below the threshold of your 
oil pressure switch.  Also, you got the engine good and hot with the 
extended drive at speed, which tends to make the oil pressure light 
more liable to come on.

	My '69 AT hunts at idle when in gear, too, and occasionally 
will oscillate low enough for the oil light to come on.  The problem 
is not with the oil system, but rather that the engine speed is too 
low to maintain good oil pressure.

	A possible cause of hunting idle is a troublesome auxiliary 
air regulator.  Unfortunately, mine seems to check out fine...

-Greg

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