Condition, my '92 SR started to act up on me this morning with a winking oil pressure light, then full on at times.Now I'm at work with a gauge attached to the engine, and the pressure light has been off all day except for the various times it was on this morning after only a few minutes after start-up when the engine was still warming up and I was driving at city speeds[slow <img src="/forums/images/graemlins/wink.gif" alt="" />] The switch appears to be OK, and oil pressure is now 28-40psi at idle, and goes to 90 psi while holding the RPMs up. Output reading is very erratic, wild flucuation of the gauge needle over a 10psi range easy while at idle. Gets better with higher RPMs. Nice and steady.
Looks like a possible sticking/stuck open relief valve this morning, and a "trying" to stick relief valve this evening or just worn spot on the pump <img src="/forums/images/graemlins/confused.gif" alt="" />. Factory manual doesn't have ANY info on the pump other than the bolt lengths and a picture of the pump. Does anyone have a spec for the pump output? thanks, Houston