heres the question my oil pressure is fine while driving around normally (50-55 psi), but when i "get on it" it goes down to (30-35 psi) at idle it normally is around 30-40 psi when it is fully warm. (it is 50-65 psi when idling when cold) Is all of this normal or do i have a problem, and what could it be? oilpump? bearings?
#82697, "RE: oil pressure" In response to Reply # 0
It is normal for oil pressure to fluctuate as the engine RPM change as the oil pump is driven by the crankshaft, but the oil pressure dropping when you get on it and the engine RPM rise is not what you should be seeing. You may have a bad relief spring in the oil pump assembly, but until i see it myself and can verify exactly what you're saying, i can't tell you exactly what the problem might be.
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#82717, "RE: oil pressure" In response to Reply # 2
Originally posted by donnyb373 your oil pressure should be about 75 psi at wot, at idle it should be 28-35 psi, sounds like you need a new oil pump
Factory service spec states that a hot curb idle should be around 4psi. Anything more is still within spec.
Idle should be around 25, 50ish cold, more is better. Wot, 60-75 is normal.
Low oil pressure is not always (and, in fact, usually not) the oilpump itself. Large bearing clearances can cause it just the same.
______________________________ If a sentence found online has 35% misspellings or greater and includes at least two racially charged expletives, chances are it is a YouTube comment.
'95 Eclipse TurboGS (garage deco) '95 TSi AWD (restoring a survivor) '97 Talon ESi-T (poor impulse control) '99 Eclipse RS-T (daily beater) '13 Evo X (mostly stock) '17 Sienna (Middle Aged Dad Mobile)
#82718, "RE: oil pressure" In response to Reply # 3
DarkOne is right the bearing clearence controls minimum oil pressure and the pressure relief spring controls maximum oil pressure. I was thinking of your problem and i was wondering mabye you need a filter and oil change im not saying this is a fix or even a soultion but just mabye the oil filter is possibly somewhat plugged and the oil flows through while you are normaly driving and you see the oil pressure is fine. But when you get on it the RPM's increase sending in more oil to the filter and it has to travel through the by-pass in the oil-filter because of the blockage and the by-pass restricts the oil so much (for some reason i don't know why it would though) that the pressure drops. Now this is just a guess/suggestion it might be worth a shot. Anyone else think this is a possiblity? Also i do belive the bad pressure relief valve is most likely the problem like Darkone said because the spring might be worn out or even broke allowing to much oil to recirculate when the rpm's increase. However, wouldn't the pressure relief spring still hold the 30-40 psi when you get on it??? Wow i think i just confused myself now. And these are just some ideas that whet through my head please correct me if im wrong.
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