AboutDon Berlan Expertise ASE Master Mechanic for 25 years. Can help with all aspects of BMW repair. I especially enjoy driveablity problems, mechanical or electrical.
Experience I have been an ASE Master Mechanic for 25 years.I have worked in many dealearships although BMW's are my favorite.I now have my own shop,specializing in BMW's.I have autocrossed and even gotten into mud running with my 4x4.(I am NOT a teacher and don't claim to know everything about the cars I never see.I hope to help you with your repairs and do expect some knowledge on your side.)
Question Don, Iam working on a 1999 bmw 323i E46 with 171k,the car is bucking and it has a rough idle at times! The engine light was on so I put my snap-on scan tool on the car and received code 227 and 228 bank 1 and 2 o2 devitation?? The scan tool wouldn't allow me to get alot of information.I think these codes mean that bank 1 and 2 are running lean? Now here is a little twist that I noticed in a visual inspection under the hood. The vehicle had a coolant leak at the upper radiator hose by the airbox.I removed the plastic duck work going into airbox and found coolant on the inside? I know that this might be a long shot but could this coolant get past the air filter and effect the mass air meter? The thing is I didn't check the air filter because I thought of this after the car was gone.Is there any common problems with these 2 codes?
Thanks for all your help, Eric
Answer I really can't say if this is a common problem although it is worth checking.Coolant doesn't mix well with exhaust gases and o2 sensors,not to mention what it does to a cat.I gather you cleared the codes.If so and it comes back with the same codes it would be worth checking out.I'm not sure which Snapon scan tool you have,I have a Modis with domestic,asian and the European cards as well.To get into BMW ecm you do need a special connector the round one.If you have what they call the"brick",I have a cartridge and connecter that are for BMW if your interested. Email me
