Jim Grant's Tech Tips
'94 VW Golf, Oil Pressure Light Problems
I have a '94 VW Golf 2.0 automatic transmission. When I drive in fourth
gear at 2000-2100 RPM, my oil light comes on. It does not happen all the
time, only when I keep the RPM's between 2000-2100, and I drive at that
speed for a couple of seconds. When I accelerate through that part, the
light never comes on. Also, how can I replace a fuel filter myself, I
can't find any manuals showing the location.
I'm not mistaken your VW Golf has two oil pressure switches. One that
reads oil pressure below a specified RPM and one that reads oil pressure
above a specified RPM. There is a module/computer in the dash of your
vehicle that monitors vehicle RPM and the two different oil pressure switches.
The second switch does not activate until a higher oil pressure is reached.
VW feels that for their engine to operate reliably at higher RPM requires
a minimum oil pressure that is not necessary at lower speeds. The most
common cause we see for this warning light is using incorrect oil viscosity
or the oil is contaminated and needs to be changed. As for the fuel filter?
It is located at the rear of the vehicle just in front of the fuel tank.