Low oil pressure after vehicle is hot, but no noises.

10

Asked by Jul 14, 2015 at 03:12 PM about the 2002 Dodge Durango SLT 4WD

Question type: Maintenance & Repair

I have just purchased a 2002 Dodge Durango.  When we purchased all seemed to be ok.  Until we got it home.  Of course the dealer told us they had gone all through the vehicle and it was in great condition.  The deal started the vehicle right away so we didn't check the oil.  On way home noticed once truck was warm from trip the low pressure seemed a little low so the next morning I checked the oil it was Black and almost 2 quarts low.  Took it in and had an oil change.  But oil pressure is still doing the same thing.  The manual states that anywhere in the range is normal oil pressure, but I do not understand why it starts at 3/4 of range and once hot it drops to 1/4 range.  I have no noises, she runs very quiet. Not sure where to start to make sure it is not something that is going to cost me major down the road.  Anyone have any advice. It would be greatly appreciated.

8 Answers

20,020

You should have a oil pressure test done to make sure but since not tapping may just be a bad sensor that screws into the engine block that goes the the oil pressure gauge.

2 of 2 people found this helpful.
71,005

What you're describing sounds pretty normal to me. Oil pressures are always higher when the engine is cold because the oil is thicker. When the engine and the oil warm up the oil thins out some so the pressure drops some. For example, my '03 S-10 pick up truck starts cold with the oil pressure around 60 PSI (sometimes 80 PSI in the bitter cold winter) which is about 3/4 on the gauge. Once warmed up it stays around 30 PSI which is about 1/4 on the gauge. So I think you're ok. HTH. -Jim

71,005

BTW those pressure figures are at idle speed. -Jim

10

Well last night on way home it dropped to the line right at the edge of low and it didn't leave there most of the way home. It has proper oil level. After it had cooled I started it again and now it starts at only half way on gauge instead of at 3/4. It is getting worse, but it still hasn't dropped low enough to have any bells or light for warning of low oil pressure. I have been tol oil pressure sensor, oil pump, leak which it is not loosing any oil, and oil screen sludge or wore internal parts. How can I find out for sure which is the actual cause. I know the sensor can be tested with a pressure test and the screen, the pan can be dropped, but how do I know if it is the oil pump or wore out internal parts without tearing the whole motor down?

1 of 1 people found this helpful.
71,005

For testing purposes you can hook up a mechanical oil pressure gauge. That'll tell you if the gauge on the dash is accurate. If it's not then I'd suspect the sending unit is bad or the gauge itself is bad. However if you find out the dash gauge is accurate and you have high mileage you can suspect worn crankshaft bearings, worn oil pump, sludge, or a worn pressure relief valve. HTH. -Jim

1 of 1 people found this helpful.

I have a dodge durango 2000 i got all my stuff fix but it when turn over but it what start so please tell me what go on

79,775

Make your concerns known to the dealer in writing before they decide that it has been long enough that they wash their hands of the car.

10

My 2002 dodge durango is in the shop right now (4.7 4wd). same condition, when engine is warm and driving oil pressure is high, when come to stop light, it goes to 1/4 b/f low pressure (not all the way down to 0 thank goodness) . i took it to shop to have them do a mechanical pressure test. Ill share results. This was a good video (just so happens to be a dodge durango ) https://www.youtube.com/watch?v=qu3QbvOvVNE

1 of 1 people found this helpful.

Your Answer

Durango

Looking for a Used Durango in your area?

CarGurus has 22,905 nationwide Durango listings starting at $895.

ZIP:

Dodge Durango Experts

  • #1
    Sigurður Guðmundsson
    Reputation
    2,750
  • #2
    Breanskis
    Reputation
    1,630
  • #3
    tenspeed
    Reputation
    860
View All

Related Models For Sale

Used Jeep Grand Cherokee
861 Great Deals out of 70,647 listings starting at $700
Used Chevrolet Tahoe
745 Great Deals out of 41,784 listings starting at $1,995
Used Ford Explorer
945 Great Deals out of 69,251 listings starting at $1,495
Used GMC Yukon
476 Great Deals out of 22,301 listings starting at $1,995
Used Ford F-150
2,609 Great Deals out of 198,102 listings starting at $1,300
Used Toyota 4Runner
276 Great Deals out of 23,381 listings starting at $2,300
Used Ford Expedition
355 Great Deals out of 18,337 listings starting at $1,989
Used Dodge Ram 1500
380 Great Deals out of 10,830 listings starting at $1,500
Used Chevrolet Silverado 1500
2,293 Great Deals out of 169,802 listings starting at $1,000
Used Toyota Highlander
468 Great Deals out of 31,221 listings starting at $2,500

Used Cars For Sale

2018 Dodge Durango For Sale
8,382 listings starting at $25,940
2017 Dodge Durango For Sale
42 Great Deals out of 5,332 listings starting at $25,590
2016 Dodge Durango For Sale
36 Great Deals out of 1,188 listings starting at $22,991
2015 Dodge Durango For Sale
32 Great Deals out of 1,213 listings starting at $17,988
2014 Dodge Durango For Sale
51 Great Deals out of 1,757 listings starting at $13,500

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.