Oil Pressure Dropping to Zero at Idle

2001 CHEVROLET BLAZER
124,400 MILES • 4WD • AUTOMATIC
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SHAYL954
  • MEMBER
  • 1 POST
. Ok Well first It was in the shop and when it came back It was time for an oil change. When it got time for the oil change the oil pressure started to run low but I just took it to the oil change place I didnt check the levels. After the oil change the pressure read about 40 and then when I idled it dropped between 0 and 10 and fluctuated. Checked the new oil and it is already dirty. What could be the problem. SOme things that have been suggested is

1) Oil change and make sure the filter gets changed.
2) Change Oil Pump Screen
3) Get an Engine Flush
4) Check for leaks.

Do you think any of things will change problem. I dont hear knocking but it does run rough when IDLE.
May 22, 2011 at 10:37 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Whenever there is an oil pressure issue, always verify the actual pressure with a mechanical gauge, dont rely on electric sending units. If still bad I would like to know what it was in the shop for? If it was an intake gasket (common problem) some debris may have gotten in the engine plugging up the pick up screen
Jun 29, 2011 at 9:00 AM
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