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  1. #1

    Default low oil pressure when stopped

    I have a 96 K1500. Just replaced the motor with a reman 350. For the first 50 miles or so I had no problems. Now, whenever I come to a stop, the oil pressure drops and check gauges light comes on. If I put it into neutral and rev it to 2k pressure comes back up, but stopped in drive it just won't keep the pressure up. What are the possible causes?

  2. #2
    Jr. Mechanic GOTSAND4ME2's Avatar
    Join Date
    Apr 2009
    Location
    Ukiah, California
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    79

    Default

    I had the same problem with my 93 silverado. The problem was that I was burning oil bad and the oil level was low--barely enough in the pan for the pickup to suck. Had an oil change and it went back to normal. Seeing that you just put a fresh motor in, dont think that could be your problem.
    Brian
    Nor-Cal

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  3. #3
    Jr. Apprentice
    Join Date
    Mar 2009
    Location
    Brooklyn, NY
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    28

    Default

    Very strange to have thin on a fresh motor.
    I am having exact same issue, but my motor has 160K on it.
    Insidently, i've just dropped off my truck to get a new (to me) motor installed.
    After some research, i desided that it would be cheaper this way.

    since you have a new motor, I would go back tot he people who rebuilt it and tell them about your problem. This isn't supposed to happen on a fresh motor.
    Good luck with it.

  4. #4
    Legend

    Join Date
    Feb 2008
    Location
    Red Wing, Minnesota, United States
    Posts
    3,375

    Default

    I bet you dont have enough oil in it, or maybe something wasnt correctly checked, like main bearings.
    99 K1500 Suburban LT "THE BEAST"
    Hypertech III, K&N, true dual
    285/75/16
    ___________________________
    Jason

  5. #5
    Legend

    Join Date
    Jun 2006
    Location
    River Ridge Louisiana-4 miles W of New Orleans-didn't flood-water stopped 800 yards away.
    Posts
    1,613

    Default

    Many rebuilt/reman motors aren't so great. There is a guy here who brags he can put a rebuilt one in your vehicle for the sales tax on a new car.
    He can, but some last just weeks.

    If you have the $$ the best bet is a Goodwrench-most are new, and just a few hundred more than brand X rebuilds.The TBI 5.7's are under $2000 delivered. The carbed pre 1985 are about $1600 delivered. 96-99 fancier FI (SPI ??) 5.7 are $2250 delivered. The 5.3's are pricier>$3500+- still much much more affordable than any other brand.

    Bring it back to the installers.

    Luck,
    Charlie
    1998 suburban-
    1/2 ton

    199500 miles
    River
    Ridge,LA

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