Question about BMW 323

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The yellow oil light comes on for about 5-10 secs when you start the car from cold, and then goes off.

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  • joe May 11, 2010

    oil level is fine?



    how cold is cold? will it come on for this long when its below freezing or did you mean when the car has been sitting (ie, engine is cool)? if the latter, the light doesn't come on when starting a warmed up car?

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Hi

The usual problems that would give you a delay in the oil warning light going out are...

1. Oil contaminated by fuel, and thin due to fuel injection system problems, and fuel draining into sump.

( How long ago did you last change the oil and filter ? Usually about....1 Yr or 12.OOO Mls)
Wipe oil from engine dip stick on tissue, and smell it for fuel !

Have you noticed you use a lot of fuel lately, and the car blows black smoke from exhaust on hard acceleration ?

2. Oil Warning light transmitter faulty. ( The Most Common !)
3. Oil pump pick up strainer clogged.
4. Oil pump faulty.
5 Oil draining back into the sump from the oil filter.( Faulty check valve )

If I were you, I would change the Oil and Filter, and renew the Oil Warning Light Transmitter, and go from there.
If you have a Master Oil Pressure Guage, fit it to the block when the O/W/ Transmitter is off, and run engine to confirm pressure is there from start up, and what it reads when hot, this will put your mind at ease.

Good Luck !

John.

Posted on Jan 19, 2009

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Strainer is clocked
oil sensor not good
oil pump not good
check wiring to fuel pump

Posted on Feb 07, 2014

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1 of2 things oil level is low or oil switch is faulty

Posted on Jan 19, 2009

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SOURCE: my 2002 325i upon starting the yellow oil light

That light for oil temperature and level , sensor on the bottom of oil pan may be going out , it's common.

Posted on Oct 26, 2011

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Posted on Jan 02, 2017

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