Oil pressure low 0-10 psi when engine temp goes over 200

10

Asked by Aug 02, 2009 at 02:20 AM about the 1996 Oldsmobile Aurora 4 Dr STD Sedan

Question type: Maintenance & Repair

I can drive for 20-25 minutes with no problems, when the engine gets over 200 degrees the oil pressure drops below 10 (14 i belive is average for Auroras) at 6 psi the audible and visual oil pressure warning goes off. I have replaced the oil pressure sensor and the fan relay so far with no improvement. I have also switched to 5w30 synthetic oil also with no improvement so far. coolant pressure checked out but loss of fluid still occurs. The only leak i have seen is some antifreeze when car gets over 200 degrees. Any suggestions?

5 Answers

265

mine haed the same problem then the other day it went to 0 when cold and shop told me that i had no pressure. im going to try the thing where you put 10 - 12 extra quarts and rev to 3500 but no higher. ill post what happens im going to do it tomrrow. thae problem is where the pressure releif valve gets open and the pump can not prim. you need to go to auroraforums.com and look for my thread called " my car may be dead" its under the classic aurora section may be on second page. you should join its a great place.

1 out of 1 people think this is helpful.
7,525

Not too familiar with the car but 14 psi is a low oil pressure for just about any engine, let alone 6... Take it to a shop to have it diagnosed, but if that's not an option change the oil to a heavier weight and see if the oil pressure improves. The fact that it happens at a specific temperature range and that it happens suddenly would make me guess there is a faulty pressure relief valve opening at temperature. As I said take it to a shop if at all possible.

265

14 is not all that low althought its lower than i would like. GM has it where the 5 psi when idling eventualy you will have none at all temps

1 out of 1 people think this is helpful.
10

Yea I've taken it to 2 mechanics so far i was told i should get rid of the car and i was told he did not know how to fix this particular problem it was not showing any computer codes... i will be taking it to get a 3rd opinion later this month i was also going to try 15w40 synthetic oil which breaks down at higher temperature.

1 out of 1 people think this is helpful.
70

On my 2003 Oldsmobile Aurora 4.0 V8, I had "Low Oil Pressure" on LED display (which seems to show this when below 9 PSI - never saw a number lower than that) and oil light on at idle when car was warmed up. I just replaced the sensor (about $35 / ebay - part number: 12562817) and after replacement oil pressure at warm idle is 15 to 18 PSI on display and oil light does not come on. Success! At first, to shop I took it to had said it would take 1-3 hours because of having to remove heat-shield and other things but I printed off the installation instructions taken from a GM official Service Manual DVD that showed nothing like that (basically just remove and replace). I brought in my own part and they charged me $48 labor the swap.

3 out of 3 people think this is helpful.

Your Answer

Add photo

Related Questions

Aurora

Looking for a Used Aurora in your area?

CarGurus has 171 nationwide Aurora listings and the tools to find you a great deal.

ZIP:

Search Oldsmobile Aurora Questions

Oldsmobile Aurora Experts

#1 Josh Farley
Josh Farley
Reputation 230
#2 AuroraOwner1
AuroraOwner1
Reputation 180
#3 amanda32780
amanda32780
Reputation 170
View All

Related Models For Sale

Used Pontiac Bonneville
664 listings starting at $2,298
Used Buick Regal
203 Great Deals out of 10,800 listings starting at $2,195
Used Pontiac Grand Prix
20 Great Deals out of 3,715 listings starting at $1,995
Used Chevrolet Impala
920 Great Deals out of 36,146 listings starting at $1,800
Used Chevrolet Tahoe
1,041 Great Deals out of 32,011 listings starting at $1,495
Used Honda Accord
1,165 Great Deals out of 77,424 listings starting at $969
Used Ford Taurus
352 Great Deals out of 22,219 listings starting at $1,499
Used Ford F-150
3,337 Great Deals out of 203,178 listings starting at $1,273
Used Chevrolet Monte Carlo
24 Great Deals out of 1,730 listings starting at $1,695
Used Oldsmobile Bravada
266 listings starting at $1,529