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Oil pressure light is coming on - 1998 Cadillac Catera

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Either low on oil, or low oil pressure due to engine problems

Posted on Oct 08, 2010

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Posted on Jan 02, 2017

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2007 Buick oil light comes on and off at random. Recently changed oil. GTX extended milage. .5w30. Oil level good. Any ideas


Oil pressure sensor, or most likely, oil level sensor, either sensors, wires, or connections.

Sep 04, 2016 | Buick Cars & Trucks

1 Answer

My 2007 Buick 3.9 liter oil light comes on and off. ..stays on for a while then goes back out. Checked the oil level all good. I did recently change the oil to GTX 5w30 extended milage oil. Any idea


The oil light comes on when the oil pressure sensor detects low oil pressure. The amount of oil has little to with it, although very low oil levels can cause loss of oil pressure. The best thing to do is to have the engine's oil pressure checked with a mechanical oil pressure gauge to ensure that the oil pressure is sufficient at all operating speed and temperatures. If the oil light is still flashing on and off and there is no indication of low oil pressure by the gauge, then replacement of the oil pressure sensor is recommended.

Sep 04, 2016 | Buick Cars & Trucks

2 Answers

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

2 Answers

Oil light comes on and is dinging.


The oil light has nothing to do will oil level, but rather oil PRESSURE. If the engine oil is full and there is no rattling or banging noises in the engine, chances are the oil pressure sending unit is bad. If noises accompany the light, then shut down the engine and troubleshooting the engines internal lubrication system.

Aug 01, 2014 | 1999 Chrysler Town & Country

1 Answer

2004 A160 oil light comes on, why?


Oil lights typically come on because low oil//low oil pressure. Check oil level and add if needed, then recheck to see if the light is on or not. Hook up a manual oil pressure gauge to check the pressure. Do you have an oil leak?

Dec 08, 2013 | Cars & Trucks

1 Answer

I have a 2004 Dodge Durango and my oil light comes on and goes off.We have the oil changed like we should.The other day the engine light come on and today it when off after we drove it for 30 mins.


Possible causes of the oil light coming on are -
low oil pressure
dirt in the passage behind the oil pressure switch
a faulty oil pressure switch.
Most people either replace the switch or have the oil pressure checked with a mechanical gauge.

Apr 09, 2013 | 2004 Dodge Durango

1 Answer

Oil light flickers was told oil pressure is good?


There may be a misunderstanding here.
Yes the warning light comes on when the oil pressure drops below 5psi.
If the light comes on and the switch is working correctly, the oil pressure is not good. Any problem with the pump or the screen would make the pressure not good.
If the oil pressure has been checked with a mechanical gauge and it is above 20psi, the switch or the wiring could be faulty.
You would need to have the pressure checked to know.

Feb 13, 2013 | 2002 Kia Spectra

1 Answer

2004 lincoln avaitor oil light comes on the engine shuts down


Does the oil light come on BEFORE the engine shuts down? I have to ask because it is NORMAL for the oil light to be on when the engine is not running. I had a customer that said the same thing just last week. After we wasted a bunch of time (which the customer ended-up paying for) checking the oil level, the oil pressure, and verifying correct oil pressure gauge, light, and sending unit operation, it turned out that the crankshaft position sensor was bad and causing the engine to shut down and it had absolutely NOTHING to do with the oil light - it was functioning as designed.

If the oil light is coming on before the engine shuts down, the first thing you need to do is check your oil level. If the oil level is OK, you need to check the oil pressure with a gauge to determine if there is an actual engine oil pressure problem or if the oil pressure sending unit, gauge or light is malfunctioning. Also, it is highly advisable to not drive the vehicle AT ALL if the oil pressure light is coming on while driving until the cause of the light coming on has been determined and repairs have been made. Otherwise, SEVERE ENGINE DAMAGE may result.

Feb 21, 2012 | Cars & Trucks

1 Answer

2004 Chev Epica - oil light comes when car comes to a stop


the oil light is coming on due to sensed low engine oil pressure, this is not a level issue unless u are about 3 quarts low, oil pressure indicators don't leave any computer codes, so who ever told u that is wrong, u need to test the oil pressure with a mechanical gage when the oil light is on, until U need to confirm that u don't have a real pressure issue here or you can burn out the engine bearings, if the pressure checks ok then rplace the oil pressure light sending unit in the engine.

Dec 14, 2009 | 2004 Suzuki Verona

1 Answer

Oil light keeps coming on and beeps


This is the pressure light, nothing to do with the oil needing to be being changed, you have low oil pressure being indicated, this will destroy the engine if the light is really indicating low oil pressure, have the oil pressure tested with a mechanical test guage at a shop, if the oil pressure is ok then replace the oil pressure light sending unit.

Nov 23, 2008 | 2001 Chrysler PT Cruiser

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