1994 Mazda B2300 oil pressure gauge

Tiny
STEVEFUHRMANN
  • MEMBER
  • 1994 MAZDA B2300
  • 270,000 MILES
For over 150000 miles, the "check engine" or Check oil" light occasionally comes on and goes off after a restart. Its been repeatedly checked by a dealer who can find no problem to repair. Recently the oil pressure gauge has begun occasionally dropping a bit then rising, then stabilizing, and a bit later again "bouncing" a bit. Suggestions?
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Wednesday, October 2nd, 2013 AT 1:46 PM

3 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,938 POSTS
You first need to check the oil pressure with a known good mechanical gauge, you need to know what the engine oil pressure is first. Start here
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Wednesday, October 2nd, 2013 AT 2:21 PM
Tiny
STEVEFUHRMANN
  • MEMBER
  • 2 POSTS
Mechanical oil pressure check yielded high normal pressure. Replaced oil sensor unit and no more erratic pressure readings. Cost $50.
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Tuesday, October 15th, 2013 AT 11:32 AM
Tiny
MHPAUTOS
  • MECHANIC
  • 31,938 POSTS
Good result, thank you for using 2carpros.
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Wednesday, October 16th, 2013 AT 2:40 AM

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