Oil pressure gauge Dropping

[4g63Sneaky]

1997 eclipse gst i had recently gotten a new gauge for the oil pressure and boost. when car is first started oil pressure seems fine and boost it’s like shaking. once car is warming up the boost stops shaking and oil pressure starts slowly going down all the way down 0. there’s oil in everything seems fine ruins a little rough on cold start after warms up everything is fine

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[pauleyman]

1997 eclipse gst i had recently gotten a new gauge for the oil pressure and boost. when car is first started oil pressure seems fine and boost it’s like shaking. once car is warming up the boost stops shaking and oil pressure starts slowly going down all the way down 0. there’s oil in everything seems fine ruins a little rough on cold start after warms up everything is fine

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What brand gauge is that? Have you cleaned grounds lately?