hi there
i have a problem with my e36 316i 1993 with m40 engine
wich gives black smock rich in fuel i took it to a mechanic and checked afm and enjectors and said all working fine but problem not solved after thet i star searching on web the solotion of it i find out to check lamda o2 sensor ok it was looks to me problem gona be solve but unfotunatly whan i went under the car for a look of lambda sensor i dint find it at all i only see a socket with 4 pins on top of it bmw plastic cap thats all
my question is why bmw didnt use lambda sensor in this model
and
if i buy a sensor put in my car will it work
thenx