Recent content by daves07 tahoe
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Oil Pressure
Thx. Also learned that Chevy has an additional part (oil diverter) that slips over the valve to push oil back down into the pan. This is a fix for high oil consumption.- daves07 tahoe
- Post #37
- Forum: Engine & Drivetrain
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Oil Pressure
Went ahead and changed the o-ring on the pickup tube and SUCCESS! Oil pressure is at 40PSI on startup and never drops below 30PSI at warm idle. Hits ~45 PSI at higher engine RPMs. This is compared to wildly fluctuating pressure before, down to near zero. One tip is that I did not drop the front...- daves07 tahoe
- Post #36
- Forum: Engine & Drivetrain
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Oil Pressure
I dropped the oil pan and the o-ring on the pickup tube was brittle. So hard it broke in two while trying to remove it very gently. Obviously an issue, but should I replace the dump valve above the oil filter while I have it apart? I read that sometimes the spring gets weak.- daves07 tahoe
- Post #30
- Forum: Engine & Drivetrain
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Oil Pressure
I overfilled the crankcase by adding 1 qt of ATF plus 1/2 qt engine oil, saw an immediate improvement upon starting (averaging about 20 psi) then put it on a downslope at idle for 15 min. The pressure did not dip below 10 psi as it was before. Then I ran it on an upslope and the pressure was...- daves07 tahoe
- Post #26
- Forum: Engine & Drivetrain
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Oil Pressure
My 2007 5.3l Tahoe w/225k has been suffering from fluctuating oil pressure, I replaced the screen and sending unit, no change. The pressure is very low (10psi or less) on startup, it climbs when engine RPMs are above about 1,000, but then quickly drops back at idle, I wonder if this could be the...- daves07 tahoe
- Post #24
- Forum: Engine & Drivetrain
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Oil Pressure
My 2007 5.3l Tahoe w/225k has been suffering from fluctuating oil pressure, I replaced the screen and sending unit, no change. The pressure is very low (10psi or less) on startup, it climbs when engine RPMs are above about 1,000, but then quickly drops back at idle, I wonder if this could be the...- daves07 tahoe
- Post #19
- Forum: Engine & Drivetrain
