Question about 2003 Cadillac Deville

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

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  • 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 miles..like 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 ..it proves to be a defective sensor.....please advise...thanks

  • mbrassard Nov 10, 2010

    thanks...it will be tested and replaced if needed tomorrow...very helpful mike

  • mbrassard Nov 10, 2010

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

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  • Cadillac Master
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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

  • yadayada
    yadayada 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.

  • yadayada
    yadayada Nov 10, 2010

    Great! and very glad to hear that.

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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

SOURCE: STOP ENGINE-LOW OIL PRESSURE LIGHT COMES ON AFTER INSTALLING NEW

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.

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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

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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

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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.

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