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High oil pressure!!! help

Old 12-09-2008, 08:02 PM
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Default High oil pressure!!! help

Hi guys, Im having a problem with high oil pressure.At idle the car sits alittle over 60psi. at wot it sits around 80+psi, i have used 5w-30, 10w30, with no avail. what is causing this, could it be the relief valve in the oil pump????
any help is appreciated, Thanks
Old 12-09-2008, 08:20 PM
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Thats actually fine. Does it drop down alittle as it gets to full temp? That actually sounds very normal from what ive seen.
Old 12-09-2008, 08:29 PM
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The oil pressure never bothered me, but it seems to be blowing out rear mains, now i have to put another clutch in it and i dont want this one to get ruined!
Old 12-09-2008, 08:38 PM
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Oil pressure shouldnt blow out the rear main. Crankcase pressure will though
Old 12-09-2008, 08:47 PM
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Originally Posted by BigRich954RR
Oil pressure shouldnt blow out the rear main. Crankcase pressure will though
+1 on that

check your PCV system but i dont think you have a prob there. It takes alot to blow out a rear main like that. Im thinking more along the lines of possibly a groove or something on the sealing surface of the crankshaft or possibly a rear cover problem. Rear main seals dont usually go bad that much on these engines but lots of rear cover problems. If you do it again i would replace the whole rear cover and make sure you are installing the seal properly
Old 12-09-2008, 09:14 PM
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Thanks for the info, i put a new clutch in it about 10 thousand miles ago due to leaky rear main, replaced the rear, pilot, and put a new clutch in it. No problems until now, and only when i spray does the clutch pedal fall to the floor!
Old 12-09-2008, 10:20 PM
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Check the pressure with a manuel gauge, seen the factory senser goes both way when it start to misread, I went from 20 psi at idle to 35 psi. I have seen them read acove 75 psi at idle and it is around 30-40 psi
Old 12-09-2008, 11:35 PM
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Mine is at a hair under 60psi hot at Idle. It probably goes to 75psi when it gets up into RPM's.
Old 12-10-2008, 06:24 AM
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I have an LPE high volume pump with high pressure spring, remote mount oil filter and 7qt moroso pan and i see 75psi warm idle, and 100psi on my autometer gauge and sender WOT. My front and rear mains dont leak. I am running a catch cat PCV setup as well.
Old 12-10-2008, 05:08 PM
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I found out that the rubber hose that the pcv valve connects to is in pretty bad shape. It is the larger hose that has the ground strap attached to it,seems to be leaking pretty bad, could this cause high crank case pressure?
Old 12-10-2008, 10:07 PM
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does anybody think that could be the prob?
Old 12-10-2008, 10:44 PM
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Crank Case Pressure isn't going to affect the Oil Pressure Sensor..
Old 12-16-2008, 12:43 AM
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do you guys think 129psi at idle is normal i acually have the same problem in a 98 vette and its ticking pretty loud no bent pushrods or bent spring or anything like that
Old 12-16-2008, 09:31 AM
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Thats really high.
Old 12-16-2008, 10:45 AM
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Originally Posted by ls2 dude
do you guys think 129psi at idle is normal i acually have the same problem in a 98 vette and its ticking pretty loud no bent pushrods or bent spring or anything like that
um.. holy ****.
Old 12-16-2008, 01:22 PM
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129psi at idle? That would definitely be a problem....


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