Question about 2003 Cadillac Deville

1 Answer

Low oil pressure light stop engine came drives perfect..what do i do?

Posted by on

  • 1 more comment 
  • mbrassard Nov 10, 2010

    just purchased car out of town..drives perfect looks like new...will bring into autoway service tomorrow to have the oil pressure tested as you suggest...will it hurt it to drive it 3 miles to the service center? it is not running rough..only 41 k new..or should it be towed..the salesman that sold me the car asked his cadillac mechanic and he said 99 times out of a hundred ..when this happens proves to be a defective sensor.....please advise...thanks

  • mbrassard Nov 10, 2010 will be tested and replaced if needed tomorrow...very helpful mike

  • mbrassard Nov 10, 2010

    excellent reassuring service..highly reccomend this site...mike



1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.


    An expert that got 20 achievements.


    An expert that got 10 achievements.

  • Cadillac Master
  • 83,810 Answers

Hello, when the low oil pressure light comes on this should always be treated as a possible actual case of low oil pressure, to verify the oil pressure is ok you must have a mechanical oil pressure test gage connected at the sending unit and if the oil pressure is within specs replace the oil pressure sending unit, the spec is at least 50-60 PSI at 1500 RPM hot engine. It is my personnel experience that the problem is caused by a defective sending unit for the oil pressure.

The location of the oil pressure light sending unit is on the oil filter adapter, to access the sender you must raise the car off the ground support it on jack stands and crawl under the car, the oil filter and oil filter adapter are on the front of the engine facing forward to the left of the center-line as you face the engine. The switch is shown below attached to the oil filter adapter housing.

low oil pressure light stop - emissionwiz_14.jpg

Posted on Nov 10, 2010

  • Marvin
    Marvin Nov 10, 2010

    As I said most times it is the sensor that is defective, but if the oil pressure is low you risk serious and VERY expensive damage to the engine bearings, so in good conscience I always recommend the pressure be checked, if i missed it one time and a customers engine failed, well you can imagine.

  • Marvin
    Marvin Nov 10, 2010

    Great! and very glad to hear that.



6 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

  • 6982 Answers

SOURCE: while i'm idling at a dead stop, the oil pressure

Have the oil pressure tested with an accurate mechanical gauge. often the sending unit goes bad, but without testing it could cost you an engine before you find the problem.
If the mechanical gauge shows same low readings, you have internal engine wear (likely worn crank/rod bearings) Then, it's your decision on whether to drive it till it expires, repair it or buy a new vehicle.

Posted on Apr 02, 2009

  • 1129 Answers


The idle may be to low or the motor is just old and a new set of rod bearings is need with an oilpump to bring the pressure back up.

Posted on Jul 14, 2009

  • 70 Answers

SOURCE: 2004 Pontiac Grand Am died while driving

If the engine will turn over when you try to start it it is not seized.

Posted on Nov 04, 2009

  • 1 Answer

SOURCE: oil pressure low gauge stops car.

My 2004 Buick Rainier is saying no oil pressure, shut engine down...and then it shuts down. And it has been stalling...the rpm drops and rises while I drive it and when I come to a stop in drive it stalls now...I have to throw it into neutral and it will keep running when I stop...Please help!! It will fire up but just seems not getting the gas or something like that, my engine light is on as well and has been for the past year and this problem only just started 2 months ago.

Posted on Feb 04, 2011

  • 1252 Answers

SOURCE: What's wrong when car says oil pressure low stop

Could be a few things......low motor oil, clogged oil filter, bad oil pump, clogged oil sump (pick up tube), idel too low....ect...Hope this helps ??

Posted on Jun 18, 2011

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Oil pressure low is on,and it say stop engine can I drive it if I put oil in it

If the oil PRESSURE is low, AND you have plenty of oil in the engine, DO NOT drive it.

If the oil level is low, add oil to the "full" mark on the dipstick. Start the engine, and see if the light goes off. If the light goes off, you can drive it.

Nov 06, 2015 | 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

1 Answer

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

1 Answer

Low oil pressure light comes on when i stop giving the car gas like when i come to a stop sign or light and every now and again the check engine light comes on. I change the oil to a heavier oil and the...

This may mean engine wear or bad oil pump. I would have the oil pressure tested to see if its a shot some where or if the pressure is really low, this is done by removing the sensor and installing a gauge and driving the car to see if the pressure is low, if the pressure is low then more checking is neede to see why,you may have worn engine bearings or bad oil pump. depending on the mileage it may be smarter to replace the engine, not knowing what internal damage has been done already. good day.

May 10, 2011 | 2006 Pontiac Grand Prix

1 Answer

2004 Passat stop engine low oil pressure light was on checked oil..level is fine. Sounds like lifters clacking. Any ideas what could b going on

You have low oil pressure ! Do not drive ! Sounds like the engine main bearings and or cam bearing in worn causing low oil pressure ! Make sure your oil is in good condition ! If so then unfortunately your engine is worn and will probably require replacement !

Mar 14, 2011 | Volkswagen Passat Cars & Trucks

2 Answers

The Warning Light Comes on "Stop Engine Low Oil Pressure" what does this mean

car needs oil pressure or bearings will wear out in short time. Do not drive or start engine with this light on. Might only be pressure sending unit. Can replace sending unit and start briefly to see if problem resolves. If light still stays on, shut off engine and have oil pump replaced.

Sep 06, 2010 | 2005 Volkswagen Passat

1 Answer

Oil light blinking

there is always the possibility that you really have low oil pressure when you get this light, at idle the engines oil pump produces the least pressure and if there are problems then that is when it shows up, so have the oil pressure tested by a shop with a mechanical test gage, if the oil pressure is within spec then replace the oil pressure light sending unit on the engine, I don't recommend you drive this until u are sure of the pressure, u can SEVERELY damage the engine is the pressure is really low.

Jun 23, 2010 | 1993 Honda Accord

3 Answers

My light comes on and off low oil pressure. I had all my fluids checked and they are full. I want to no what else can be causing my light to come on

could be a malfunction of the oil pressure switch or u have not change the oil in time for some time and is sludged inside yuor engine, oil gets muddy (burn) it looks like is oil in it but is not

Apr 24, 2010 | 2002 Buick Rendezvous

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

Not finding what you are looking for?
2003 Cadillac Deville Logo

Related Topics:

729 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cadillac Experts


Level 3 Expert

83810 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22413 Answers

Jeffrey Turcotte
Jeffrey Turcotte

Level 3 Expert

8841 Answers

Are you a Cadillac Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides