1989 C 4 Oil Pressure
February 5th, 2022, 4:28 PM
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1989 C 4 Oil Pressure
My 89’ shows it is dropping pressure after warm up. If I stop it shows on dash as dropping to 5 lbs, but driving runs at 35-40. I have replaced the pressure sending unit, same issue, new high pressure/volume oil pump, same issue. Is there any other sending units related to oil. Hoping its not a pull engine for rods and mains.
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topofthetotem
Tahoe & Suburban
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January 29th, 2010 5:57 PM