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Old 02-23-2012, 05:01 PM   #1
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oil pressure goes down when idling?

I have a 97 jeep wrangler 2.5l and the oil pressure goes down to about 20 while idling then when it gets higher rpms it goes back up is this normal only had the jeep two weeks?

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Old 02-23-2012, 05:18 PM   #2
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If it wasn't doing that, you should be concerned.

Faster engine speed, spins the pump faster = more flow, hence higher pressure.

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Old 02-23-2012, 05:57 PM   #3
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Yeah it's supposed to do that
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Old 02-23-2012, 06:28 PM   #4
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It usually isn't real noticeable when the engine and oil are cold, but using 5/40 multi-viscosity oil and your engine is up to temp then it is quite noticeable, it's also normal and you are good to go
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Old 02-24-2012, 04:22 AM   #5
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as it was stated it is normal for it to be low when off the gas, and go up when the RPMS go up, but you may have an issue with a low oil level or a worn oil pump.

Tips on Reading Gauges: Oil Pressure Gauges
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