Oil pressure light comes on at idle - 1997 Porsche Boxster

Question 1

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High temp low oil pressure light comes on after driving for a few minutes, then off when engine at driving rpm. At stop light (idle or low rpm) light comes back on. Normal driving it goes out.

You need to find out why you have low oil pressure. It is normal that as engine rpm's increase, the oil pressure will rise- the oil pump is moving oil faster. Even though your light goes out, you could still have critically low oil pressure. There should be sufficient pressure at idle to keep the light off. The light will come on when your oil pressure is almost nil- I believe for some it's as low as 8 psi. Normally, oil pressure at idle is specified anywhere from 15 to 40 psi. You would have to check specifications for your Expedition. To verify oil pressure, hook up a mechanical gauge at the oil pressure sending unit on the engine block. Check with a local shop.

The causes run from easy, simple to budget busting ruin. Low oil level, wrong grade oil, real old oil, oil leaks, internal oil leaks, worn oil pump, worn crankshaft bearings. It was pretty common on older very high mileage cars to have a fluttering oil light at stops and idle. It was time for a rebuild, or time to look for another car.

Jul 06, 2015 • 2003 Ford Expedition

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00 lincon navigator 5.4 oil pressure drop's low and light comes on , engine idles rough when pressure drops ,then pressure return s to normal range ,light goes out ,engine runs perfect. Is it my oil

Sounds more like an engine idle issue than a oil pressure issue. If the engine idle drops too low, the oil pump cannot provide sufficient oil pressure. If there is no oil light when the engine is idling normally, then there is no problem there.

Dec 25, 2014 • 2000 Lincoln Navigator

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Dodge v10 loss oil pressure ownly win idleing

Old engine tend to wear piston ring in time,if you use wrong viscosity grade oil ,during idling the oil could not reach all moving parts because there is no enough oil pressure in the system,try 30/ 40 oil grade .

Oct 11, 2014 • Cars & Trucks

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Oil light on after engine warm-up on idle

this means a mechanical gauge test is required to check actual pressure warm idling if low below 20 psi then the oil pressure pump relief is stuck open or engine bearing are worn

May 15, 2014 • 2005 Opel Astra 1.4

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Oil light comes on when idling oil level is good

faulty oil pressure switch (cheap), worn oil pump (not pumping enough oil at low revs) but most likely worn shells or crankshaft (allows oil to pass too quickly lowering oil pressure - just not noticable when the engine is reving 'cos there's a lot more oil bieng shifted by the pump)

Oct 02, 2012 • Ford Cars & Trucks

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Oil pressure light at idle

when the light comes on at idle do you notice any engine noise different from the norm.if not then the oil pressure sensor(ops) is bad/weak and will need to be changed.if you hear abnormal noise with the light on then you will have to have teh oil pressure checked to see if its within specs.

Dec 06, 2011 • 2001 Mazda Tribute

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I keep losing oil pressure when im at an idle but when i acc. the pressure comes back up and i have checked the oil it is fine

What is the make/model of the Jeep? What engine? Are you losing pressure completely or is it just low at idle? Many older Jeeps show little oil pressure at idle when the engine is warm. If you aren't hearing rattling like you are actually losing oil pressure, and the pressure comes up when you accelerate, you are probably OK.

Jul 30, 2011 • Jeep Wrangler Cars & Trucks

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