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Thread: 'Jerky' oil pressure gauge

  1. #1

    Default 'Jerky' oil pressure gauge

    High mile 2002 has good oil pressure, but gauge no longer operates in smooth, sweeping motion - rather, it jumps in 30-40# increments in either direction when climbing or dropping.

    Replace OPS, or gauge? If the gauge, can the cluster be pulled from a wreck and maintain correct mileage - or would you replace only that gauge?
    2011 Chevrolet Tahoe 5.3L daily driver
    • Previous owner of two 1994 6.5L K3500s, '01, '02, and '05 6.6L K2500s, '04 C4500, '06 K3500 dually, '06 K3500 SRW, '09 K3500HD SRW, '05 Denali
    • Total GM diesel miles to date : ~950K

  2. #2
    Join Date
    Apr 2001
    Location
    CA
    Posts
    13,573

    Arrow

    Put an ohm meter on the OPS output and monitor it. If it is bad, the meter should show the wild swings. If it has a smooth transition, replace the cluster. If you happen upon a used cluster, you can replace just the gage, but you aren't supposed to be able to. It will take some creative skill. You can send the cluster to a repair place (Robyn, I think, mentioned one that does this) and have the cluster repaired. Also, it may be a resistor on the gage causing the problem like older models, but I haven't looked into it, so it may not. If so, it would be a simple fix, just replace the resistor.
    1985 Blazer 6.2
    2001 GMC 2500HD D/A
    dmaxmaverick@thedieselpage.com

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