When performing an oil pressure test on the CRD, is it common for the gauge reading to bounce around a lot?

The gauge never read lower than spec, but bounced around more than normal with other cars.

Is this just a normal quirk of the 2.8l diesel?

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2005 Limited CRD

Mine does not bounce. 17 psi steady at hot idle. Around 35 at 2000 rpm. Exact number escapes me right now. Rotella 5w-40 oil.

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05CRD: GDE Hot ECU & TCM tunes, Provent, Cat filter, Facet lift pump, TransGo kit, Florida TC, Samcos, stainless brake lines, HDS thermostat, Renegade light bar,
RL super sliders, Bilstein adjustables, Al's Gen 4.5 Arms, 235/85-16 Duratracs, DTT rear, Elocker front, EVIC+TPMS, Turbo timer, McNally pillar gauges, Weeks Stage II kit.

I use the same oil. Thanks for the feedback.

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2005 Limited CRD

Are you using a mechanical gauge? Where are you tapping in? Mine is electrical, in the factory location, so that could be the difference.

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05CRD: GDE Hot ECU & TCM tunes, Provent, Cat filter, Facet lift pump, TransGo kit, Florida TC, Samcos, stainless brake lines, HDS thermostat, Renegade light bar,
RL super sliders, Bilstein adjustables, Al's Gen 4.5 Arms, 235/85-16 Duratracs, DTT rear, Elocker front, EVIC+TPMS, Turbo timer, McNally pillar gauges, Weeks Stage II kit.

Yes, a mechanical dial gauge. I am reading at the oil sensor/sender port.

Needle bounces around a lot, but never read low.

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2005 Limited CRD

You might have an air bubble in the gauge.

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U.S. Army Retired

Now I am thinking it is a bad oil filter. I'll change it and see what happens.

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2005 Limited CRD

I replaced the Napa Platinum filter with an OEM Mopar filter, and the oil pressure was much more stable.

I guess I got a bad Napa filter.

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2005 Limited CRD