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1998 318i M43B19
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52 Posts
Discussion Starter · #1 ·
Hey, I heard that e46 had 4 lambdas so I was looking for them and found two on the exhaust cat. I couldn't really find nothing else.
I own 318i 1998 M43b19
 

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Registered
1998 318i M43B19
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52 Posts
Discussion Starter · #12 ·
Well, it shouldn't be cracked so having it fixed is a good idea. Is it the cause of the smoke? I can't say but if the smoke smells like burning coolant, you could have a bad head gasket.
I'm currently waiting for kdcan cable so I can read the codes, but it is not thick fog smoke. Also could you help me identify what the previous owner tried on this?
Leg Automotive tire Wood Motor vehicle Fender

Automotive tire Wood Water Tread Motor vehicle
 

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2002 330ci auto
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1,549 Posts
Oh wow, never noticed that, should I get this welded asap? Could this be the thing causing the mpg? I will check for more in the morning.
Unplug the precat O2 and see how the car runs. I would, a crack near the O2 sensor is likely tricking the car into thinking it's running lean, so it'll keep increasing the fuel injection
 
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