86 Audi 4kq oil pressure light

[Tony Hoffman]

The first thing is a oil pressure test, as suggested. You can just
unscrew either of the senders and put the guage in the hole for
testing purposes. Then, if that tests out, hook na ohmmeter to the
high pressure sender and see if it's sending a signal that corresponds
with the light (ground) at high rpm's. If so, replace it. If not, you
may have a bad dynamic oil pressure control on the back of the
instrument cluster. It is a small board plugged right into the back of
it, with three contacts on it.


Tony Hoffman

On Jan 17, 2008 5:51 AM, Reginald S. Archer <tisi at ufl.edu> wrote:
> The oil pressure light in my 1986 4kq cs comes on at about 2500 rpm or
> 55 mph.  It also goes off when i get below that speed and rpm level.  I
> think it may be the oil pump, but are there any other possibilities?  Is
> a pressure check the only way to test it?
>
> Reggie
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