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87 944
Join Date: Oct 2008
Posts: 63
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Low oil pressure
Once the car is warmed up while idle the oil pressure drops and the light comes on. If i give it a little gas it goes back up and the light comes off. In higher rpms its between 2 and 4.
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11-03-2008, 01:06 PM
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Redline Racer
Join Date: Jan 2007
Posts: 2,444
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What weight oil are you running? These cars should have at least 5W-40 unless it's consistently sub-zero temps outside. It could be a lot of things like bad bearings, slipping oil pump drive gear, cracked pickup tube, bad or too thin oil, sticking OPRV. Any noises involved?
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1987 silver 924S made it to 225k mi! Sent to the big garage in the sky |
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11-03-2008, 01:09 PM
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Registered
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Those are all acceptable reasons. I am dealing with the exact same problem. In my case, the power steering pulley has been worn to a point where it's no longer putting proper pressure on the oil pump drive gear, and it's not creating pressure (This is my current theory). Eliminate the more simple options though like thin/old oil, sticking OPRV (oil pressure relief valve). I'm going up to 20W50 oil to thicken it as well as replacing my pulley gear.
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11-03-2008, 04:45 PM
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Registered
Join Date: Jul 2001
Location: Suntree, Florida, USA
Posts: 2,261
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I started running 15/50 Mobil 1 and never have a pressure problem... except after double digit laps on the track and even then it only goes down to 4 bar.
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JB - BreitWerks www.breitwerks.com 321-806-8664 Engine Rebuild & Restorations |
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11-03-2008, 06:00 PM
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1986 Porsche 944 2.5L N/A
