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01-24-2018, 09:38 AM | #1 | |
AF Newbie
Join Date: Mar 2005
Location: Saint Charles, Michigan
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Oil pressure issues
2008 5.3 flex fuel afm 197,500 miles.
I can only get maybe 1,500 miles on an oil change before check engine light comes on for low oil pressure detected. Changed sensor the first time I got the code, screen was clean but replaced anyway. Also changed oil at the same time. Has always used Oil, have to add a quart every 1500 also. It appears I have a leak where the oil pan attaches. Have been using Valvoline high mileage synthetic mix since 100k. With fresh oil change 30 psi at idle, 40+ at highway speeds. As oil gets old drops to less than 20 cold, and 20 at warm idle, 30 or less at 60 mph. Any ideas? |
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01-24-2018, 12:16 PM | #2 | |
A990 racer
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Location: Chestertown, New York
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Re: Oil pressure issues
That is low, if this can be verified with a gage attached to the sender port, then I would consider a new oil pump set up, I believe this was somewhat common on those engines, do some online research first. High quality filter? Not a severe leak? Keep in mind any internal bearing wear can cause all these conditions.
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01-24-2018, 04:17 PM | #3 | ||
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Re: Oil pressure issues
Quote:
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01-26-2018, 01:27 PM | #4 | |
AF Newbie
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Re: Oil pressure issues
Have owned this truck since new. I replaced with new valve cover, but did not do deflector. I guess i just dont understand why oil and filter change fixes the problem temporarily. Have used same oil filters for life of truck so I don't know how that could be the issue. Oil changes every 5000 miles until this issue started, then I started doing them more often. Moot point now except to help others. Traded it in last night while it had fresh oil and no check engine light.
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