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    Oil Level Sender (My Experience) PICS

    So alot of us have the oil level sensor light comes up on the check panel.

    When you go to the dealer you see they sell the sendor unit for 150, and those who are lucky with CCA still have to fork over nearly 80 bucks.

    Thats not the point... The point is, I took mine out to clean. I throughly look and analysed it and I can confirm that there is very VERY VERY little chance these things can even break.

    All it is is a metal ball on the inside of a cylinder, when the unit is install the oil pushes the metal ball to the top of the cylinder where the wire feeds in. And when the metal ball touches the top to complete the connection. Then light goes out.

    Sounds familiar? yes, exactly like the brake light circuit.

    When you depress the brake and complete the connection the light goes off on the check panel. So how does it stay on? old oil gunking up on the top end of the cylinder which disallow the metal ball to make contact, OR gunking up totally and metal ball can not flow freely up to make contact. Solution?

    Remove the unit first, my undoing the two bolts holding it, make sure to buy a new o ring prior to removal. You will also have to remove the wierd plug, I just unbolt the whole mount for much easier disconnection.



    There are two holes one on the top end one on the bottom, just shoot brake cleaner or carb cleaner into the hole and watch the black stuff come out the other side. I would even plug on side and shoot as much in as you can, and shake it up. There will be tons of black stuf coming out, make sure you do it from both sides



    Lastly, after you feel like its cleaned, put it in your favorite oil and soak it and then shake it up and drain and soak etc. This make sure you dont have brake cleaner mixed with your oil in your engine.



    This mechanism is so unbelievably simple, its basically mechanical, there is nothing to break. Clean it well, spend money else where. My light has been off for a month since my cleaning, and it doesnt even try to come on. I unloaded tons and tons of black stuff from it.

    #2
    btw

    dont forget, when you put the unit back in... WAIT!!! the oil goes in from this tiny hole from the bottom, it needs to fill the unit untill the ball touches the top... you need to wait 10 to 15 min before testing, before going crazy and think its not working. Patience is key.

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      #3
      beat me to it. My oil level sensor is on and just went throught the cleaning process. If only it wasn't raining outside, it would be installed right now, and awaiting testing.
      Continuous For Sale Thread
      323i s50

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        #4
        Word to that, they're unbreakable. Mine still worked even after this ;)


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          #5
          got a bigger pict of that broke pan?

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            #6
            ^ http://img.photobucket.com/albums/v3...er/carnage.jpg

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              #7
              well changed mine yesterday and after driving to work this morning (20 min) and back my light is still on. Any other suggestions?
              Continuous For Sale Thread
              323i s50

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                #8
                cleaning it

                well it takes alot of time to clean it right, I would clean it again. Remember to clean the side where the contact is is, is the most important and shaking it up real good to get rid of the gunk off the metal ball inside is a must.

                assuming you did it right, use thicker oil may help. High mileage oil are good. They are higher on viscosity and will lift the metal ball inside the sensor to make contact easier.

                thirdly, check the connectors and see if its grounding elsewhere. These wire goes in and out of the engine sides, and if its touching and melted the insulation and grounds then your light probably would come on.

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                  #9
                  thereisnoyun, can you get the pictures back online?
                  I Timothy 2:1-2

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                    #10
                    so.. iv concluded that this is what im doing 2morro... hopefully light goes off. would this cause the engine to idle funny?
                    Operation S/C E39M5.:woowoo:

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                      #11
                      Originally posted by dj2xrated View Post
                      so.. iv concluded that this is what im doing 2morro... hopefully light goes off. would this cause the engine to idle funny?
                      Highly doubtful (no).
                      I Timothy 2:1-2

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                        #12
                        well i cleaned it light came off..and still idles funny. not a problem though after 5 minutes of warming up all idling issues disappear
                        Operation S/C E39M5.:woowoo:

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                          #13
                          Just pulled mine out and cleaned it - not a whole lot of black stuff, but the level certainly moves much father and more freely than it did before... reinstalling tomorrow...
                          I Timothy 2:1-2

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                            #14
                            I don't see the point in soaking in oil. I am blowing compressed air through both holes though.
                            I Timothy 2:1-2

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                              #15
                              Which side of the pan is the oil level sender? Passenger or driver?

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