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Oil Pressure fluctuation

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Old Feb 28, 2004 | 02:37 PM
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Default Oil Pressure fluctuation

Is it normal for my oil pressure to fluctuate so damn much? It will go from just over 40 to damn near 80 under normal driving, sometimes even at idle/ really slow speeds. Any ideas what it could be if it's a problem? Much thanks to anyone who can help!
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Old Feb 28, 2004 | 04:06 PM
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Oil pressure will always vary by engine RPM, and your numbers sound right for operating rpm range. My Silverado does the same thing and it's bone stock, same with my '01 LS1 transplant.
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Old Feb 28, 2004 | 04:22 PM
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what oil filter are you using? Some filters are more restrictive than others and can cause your oil pressure to jump around under different loads...
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Old Feb 28, 2004 | 07:57 PM
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I dont know the filter, I havent changed the oil myself, my dealer does that. My dad doesnt want to get the friggin driveway dirty, lol, I know hes a wuss. Sometimes its constant and sometimes it varies, with no set pattern. I could be at 50 psi at 4000 rpms then another time be at 70 psi. It just has me worried.
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Old Feb 28, 2004 | 09:02 PM
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Sounds like a possible intermentant short at the oil pressure sending unit.
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Old Feb 29, 2004 | 03:00 AM
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T T T
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Old Feb 29, 2004 | 06:12 PM
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