Oil gauge reads no pressure

2000 MERCURY MOUNTAINEER
200,000 MILES • 5.0L • V8 • 4WD • AUTOMATIC
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MICHAEL BURLEY
  • MEMBER
  • 3 POSTS
What would make the oil gauge read no pressure but then it kick in? the engine does not knock or run different.
Feb 16, 2019 at 6:03 AM
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SCGRANTURISMO
  • ✓ASE Certified Mechanic
  • 4,897 POSTS
  • ASE Certified Mechanic
Hello,

This is probably an oil sending unit that is going bad. I have it happen to me quite a bit in my Mustang. Not sure why they go out, but they do. Check to make sure wire is on good and tight. If it is I would pick one up at local parts house. They are inexpensive, around $10.00. I have included removal/installation instructions in the diagrams below.

Thanks,
Alex
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Feb 17, 2019 at 10:22 PM
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