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Thread: 2001 Deville Northstar - rebuild - oil pressure

  1. #1
    Join Date
    Jun 2013

    2001 Deville Northstar - rebuild - oil pressure

    I just recently rebuilt my caddy motor and fired it up and the indication light says I have low fuel pressure to stop motor. I have primed the system and still no pressure. When I was building the motor I put a new oil pump in, so I'm stuck and need some ideas anyone

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  3. #2
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
    Automobile(s): 2002.5 F55 STS - 67,500 miles, 2014 Explorer XLT FWD
    Join Date
    Feb 2006
    MD Eastern Shore, Kent Island

    Re: 2001 Cadillac Deville 4.6l Northstar

    Your post has nothing to do with Registration problems or Login issues. Please read the descriptive text in each forum banner to find out what is supposed to be posted there.

    Moved to the proper Deville forums.

    Fuel pressure ??? Oil pressure - the oil pump is driven by friction between the harmonic balancer hub, the oil pump drive sleeve, and the crankshaft machined shoulder. There is a specific torque - degree sequence to get that sleeve properly clamped. Read your GM service manual again, lock the engine flywheel (flexplate) and perform the proper torque/degree procedure on the harmonic balancer bolt.

  4. #3
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with DTS floor shift)
    Join Date
    Jun 2004
    Woodstock Ill.

    Re: 2001 Deville Northstar - rebuild - oil pressure

    I strongly suspect you did not torque the harmonic balancer properly. I forget the torque spec, but it is quite high.

  5. #4
    stoveguyy is offline Cadillac Owners Connoisseur
    Automobile(s): 03 STS
    Join Date
    Aug 2007
    mpls mn
    Why did u rebuild motor
    Last edited by stoveguyy; 06-24-13 at 12:38 PM.


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