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View Full Version : Just did my O2 sensors


lilgsx
02-16-2008, 12:21 PM
I just did them. It took about 25 mins and two burns on the back of my hands. :mad I got mine from Advance auto parts Bosch 13477 for $80.11. This are the direct plug in no splicing required. The car seams to idle better than before. I was getting 18.5 mpg I will report back once I get a few miles on the car with new mpg. This is on a 99 540i.

Luke
fifthand
02-16-2008, 12:30 PM
How many miles on the orginal sensors?
lilgsx
02-16-2008, 12:39 PM
110K on them.
paz9x
02-16-2008, 01:57 PM
did mine last week. mileage so far seems to be down slightly, though ive been getting on it a bit more for some reason. car is more responsive though i dont expect to see much a difference until the collapsed cat is replaced.
jnyost
02-16-2008, 03:49 PM
I need to replace mine too. This 540 doesn't seem to get as good mpg as my last one. Already done the plugs, filter, maf clean. Now it's time for the O2s...
jnyost
02-16-2008, 03:53 PM
I just did them. It took about 25 mins and two burns on the back of my hands. :mad I got mine from Advance auto parts Bosch 13477 for $80.11. This are the direct plug in no splicing required. The car seams to idle better than before. I was getting 18.5 mpg I will report back once I get a few miles on the car with new mpg. This is on a 99 540i.

Luke

Wonder why autozone is listing 15736 for my 2000 540?

Never mind.... I'm a retard. Had the wrong vehicle selected.
DavidR2PA
02-16-2008, 08:29 PM
I had mine done by the dealer 2 weeks ago (both pre-cat sensors under CPO warranty). My mileage went from 25 to 30 highway, no other changes. I make the same 90 mile trip each way several times a week and the results are repeatable. They used parts numbered 11-78-1-742-050, I presume BMW parts
rmsretire
02-17-2008, 12:34 AM
I had mine done by the dealer 2 weeks ago (both pre-cat sensors under CPO warranty). My mileage went from 25 to 30 highway, no other changes. I make the same 90 mile trip each way several times a week and the results are repeatable. They used parts numbered 11-78-1-742-050, I presume BMW parts


what did you say to get them to do this on CPO warranty? or, what symptoms did your car have?
Dinan330ic
02-17-2008, 01:18 AM
whoa!! I had mine done today as well, but I had my mechanic do it. I didn't have a breaker bar. Those things are TIGHT!!!
noahtheviking
02-17-2008, 03:31 AM
going to do all four on mine this week I had a engine light on and the peak code tool showed they needed replaced. Hope it runs better