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Oil light comes on at idle speed

Tiny
GSSIMONS
  • MEMBER
  • 2003 BMW 325I
  • 136,000 MILES
The Oil light on the dash comes on when the engine is at idle speed. Oil light goes out when accelerating or moving at higher rpm than idle. This only happens after engine is warm. Do I have an oil pump problem?
Sunday, July 21st, 2013 AT 12:46 PM

2 Replies

Tiny
CARADIODOC
  • MECHANIC
  • 33,874 POSTS
The most common cause of low oil pressure is worn engine bearings. Next would be oil that is too thin due to being the wrong viscosity for the engine or it's diluted with gas from a previous running problem. The first thing is to have your mechanic connect a mechanical oil pressure gauge to verify the pressure really is low. If it is not, suspect the oil pressure sending unit.
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Sunday, July 21st, 2013 AT 1:27 PM
Tiny
GSSIMONS
  • MEMBER
  • 2 POSTS
Thank you, I just bought the car last week. I will change oil first then check oil pressure.
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Monday, July 22nd, 2013 AT 8:43 AM

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