1995 SW1 has gone through about 5 oil pressure senders. They all started
leaking through the electrical connection. The first 4 were from NAPA, then
I bought the factory one from a Saturn dealer. That one lasted
maybe 500 miles. Car has 194,000 miles. Regular oil changes with Castrol
Okay, this points to high oil pressure. Before tearing off the timing cover
and replacing the oil pressure relief valve, I wanted to have a metric to
compare. I bought a SunPro electric oil pressure gauge. Installed it
today. Gauge has calibrations from 0 to 100, with 50 being dead center. I
would have bet that my pressure was going to
be around 85.
Good thing I did not bet! Pressure hovers around 50. I saw it jump almost
to 60ish with the throttle open, but that's it. It drops to around 35 or so
when the engine is hot and idling, which I would expect of a car with this
Is anyone else running with an oil pressure gauge, and if so, what are the
pressures that you see? I have a hard time believing that 50 is too high.