We own a 1989 Jetta. When I bought it from a used car dealer 9 yrs. ago, it
was leaking from that same switch. The cheapskates they are, they went and
bought a "replacement" oil pressure switch. All was well, until I left the
dealer and accelerated, buzzer time. My advice, replace them both, and buy
the originals.

Hector

> On the inline 4 gasoline engine (Taken from a 1996 Cabriolet) anybody know
> the oil pressure switch well?
> While my SO was driving it, the oil light came on, so she pulled into the
> Canadian Tire garage parking lot (She swears she was only a block away)
and
> called me.  Anyway, it was leaking oil around the pressure switch (Atop
the
> pump outlet, right over where the oil filter screws on from beneath), so
we
> just let the Canadian Tire garage guys put their aftermarket pressure
> switch in...
> Now, the oil light comes on whenever the engine RPMs stay over 2300 for a
> few seconds...
>
> My question is shouldn't the switch be a 2 position normally open, such
> that the oil pressure closes the switch before the engine gets to 200 RPM,
> and then the lead is grounded, to cause no oil light?
>
> With the engine off, and the wire removed, I test the switch and it is
> grounded. (Closed)
> When I start the engine up (Cold, 20w40, idling at about 1100 RPM) the
> switch opens within a couple of seconds. Forgive me if I'm overlooking the
> obvious but this HAS to be a normally closed switch, did the FLAPS guys
> give me an incorrect part? They insist that it's the correct switch for
the
> engine (They really don't like my van much though. it bothers them)...
>
> I guess what I'm looking for is confirmation that the switch should be a
> normally open, and that my tests are the correct way to determine that it
> isn't...   Anyone out there more sure of themself than I?
>
> Thanks in advance.