flashing red oil when slowing down - E46Fanatics E46 BMW Social Directory E46 FAQ 3-Series Discussion Forums BMW Photo Gallery BMW 3-Series Technical Information E46 Fanatics - The Ultimate BMW Resource BMW Vendors General E46 Forum The Tire Rack's Tire Wheel Forum Forced Induction Forum The Off-Topic The E46 BMW Showroom For Sale, For Trade or Wanting to Buy

Welcome to the E46Fanatics forums. E46Fanatics is the premiere website for BMW 3 series owners around the world with interactive forums, a geographical enthusiast directory, photo galleries, and technical information for BMW enthusiasts.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   E46Fanatics > E46 BMW > General E46 Forum

General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 05-04-2017, 10:41 PM   #1
jeffbert
Registered User
 
Join Date: Apr 2017
Location: Seattle
Posts: 23
My Ride: 03 325Ci Convertible
flashing red oil when slowing down

Hi all,

Got a red flashing oil light when ever I get my 2003 325ci to normal running temperature once I slow down to below 10mph. As soon as I start to speed up, even every so slightly, it goes away (most of the time)... always goes away once I get past 10mph. Usually goes away if i turn car off and back on. Never comes on when I'm at faster speed than say 10mph, only comes on when I slow down.

Is this indicative of a bad oil level sensor? Bad oil pump? Serious issue?

Thanks,

Jeff
jeffbert is offline   Reply With Quote
Ads by Google

Guests, get your FREE E46Fanatics.com membership to remove this ad.
Old 05-05-2017, 07:45 AM   #2
markusmarkus
Registered User
 
Join Date: Jul 2008
Location: USA
Posts: 6,194
My Ride: 2001 330Ci
Did you check the oil level? How many miles on the oil and filter? Are you hearing any knocking when the red oil pressure warning light is on?

It's not a leak. It's one of 3 things:
- the oil pressure sensor is bad
- the oil pump is going bad
- there's a blockage in the oil path so that the oil pressure sensor sees a reduced pressure.

The sensor is located on the oil filter housing. The dipstick is nearby.
markusmarkus is offline   Reply With Quote
Old 05-05-2017, 08:44 AM   #3
jeffbert
Registered User
 
Join Date: Apr 2017
Location: Seattle
Posts: 23
My Ride: 03 325Ci Convertible
Oops, should have added those details:

185k miles
Oil level in spec
No knocking or other weird noises

Thanks for reply. Going to start with Oil Pressure Sensor.
jeffbert is offline   Reply With Quote
Old 05-05-2017, 04:34 PM   #4
jeffbert
Registered User
 
Join Date: Apr 2017
Location: Seattle
Posts: 23
My Ride: 03 325Ci Convertible
Linking in thread to fix Oil Pressure Sensor: http://forum.e46fanatics.com/showthread.php?t=709214
jeffbert is offline   Reply With Quote
Old 05-05-2017, 04:46 PM   #5
BMW-North
// Quandt AG (Retired) //
 
Join Date: Feb 2008
Location: GTA or Myrtle Beach
Posts: 2,751
My Ride: AMv8,e46x3,e90,e83
I would be changing the OPS immediately. Cause if it's not that then you have a serious potential to kill the engine through oil starvation. Perhaps the pump is failing or there is a clog but in any case if it is not merely a sensor error then I woulds't be driving the car.
BMW-North is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Censor is ON





All times are GMT -5. The time now is 05:33 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
(c) 1999 - VerticalScope Inc. All rights reserved.