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    oil light flashes

    Hello all i have a 325es and ( every now and again ) when i stop the oil light ( in the cluster ) will flash and when i go it turns off .I have checked the oil level and it is full .if anyone can help with this issues please let me know .thanks in advance
    sigpic www.camberwears.com Team16Niss-Meguiars-Underground Grafix -Mediagearbox

    #2
    bad oil pressure switch,
    how many miles on the car?

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      #3
      thank you that is what i have been reading.i am buying one today and i have 217,456
      sigpic www.camberwears.com Team16Niss-Meguiars-Underground Grafix -Mediagearbox

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        #4
        Might be a bad switch, but is more likely low oil pressure because it's a tired old motor. As bearings age/wear, lower oil pressure results.

        What kind of oil are you running? It might need a thicker oil.

        Use a heavy oil (40wt +) and get a magnetic drain plug, if you don't already have one, to look for metal in your oil pan.
        sigpic

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          #5
          majority of the time it'll be your oil sending unit/switch...
          WTB: 88 325i Convertible Top

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            #6
            I've been running 10W30 Mobil One in my E30 M20 for the past 8 years now has over 210kmiles so far no oil light problem, but you are right the weight of the oil does make a difference.
            Henry

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              #7
              Originally posted by MTechnikII View Post
              I've been running 10W30 Mobil One in my E30 M20 for the past 8 years now has over 210kmiles so far no oil light problem, but you are right the weight of the oil does make a difference.
              Henry
              That oil is way too thin for an E30 in that climate. You should be using a 20w50 oil.

              As to the OP's problem. The oil licght flickering on at idle could be a bad oil pressure switch, too thin an oil, bad or clogged filter, or wear in the bottom end of the engine. Replace the switch with a new unit. replace the filter with a Mann, Mahle, or Mobil-1, and use 20w50 dyno oil. If the problem persists, have a shop check the hot idle oil pressure.
              The car makes it possible, but the driver makes it happen.
              Jim Levie, Huntsville, AL

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                #8
                thanks everyone :) i bought a new oil pressure switch and it will be going in Tuesday ,and my buddy at BMW said he will do a pressure test also.but i did look at the switch and there is oil ( stains ) around it .i guess i know where my very small oil leak is at :( and yea i am running 10w 30 castrol syntech .i will change the weight this weekend as i am doing my timing belt and flushing my cooling sysytem again thanks for all the info ..i hope that is all it is .if not i guess i will be saving for a new motor
                sigpic www.camberwears.com Team16Niss-Meguiars-Underground Grafix -Mediagearbox

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                  #9
                  20w50 should be in every M20, it's all I've run for the last 7.5 years.
                  BimmerHeads
                  Classic BMW Specialists
                  Santa Clarita, CA

                  www.BimmerHeads.com

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                    #10
                    thanks everyone for the info and it was just the oil pressure switch..i have bought the new oil 20w 50 so it will be changed this weekend ..
                    sigpic www.camberwears.com Team16Niss-Meguiars-Underground Grafix -Mediagearbox

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                      #11
                      200k miles, it's not a bad call if you want to throw in some motor-honey, restore, ect...I think they help a little bit with piston slap on higher mileage pistons.
                      Originally posted by Matt-B
                      hey does anyone know anyone who gets upset and makes electronics?

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