Dropping Oil Pressure at Idle - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 08-28-2013, 09:37 PM   #11
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Buck, Did you change the oil? Did that solve the problem?
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Old 10-20-2013, 12:18 AM   #12
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I recently changed the oil pressure sensor as it had super high readings and leak.
My oil pressure on the 3800 is now normal around 70 psi and will drop to 40 psi when super hot at idle only. The thin oil can be a problem.
Just as a note I use TALL Napa Gold oil filters. They are made by WIX as far as I know.
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