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1,6,7,8 - Series and Mini Cooper General Chat related to models that do not fit into particular categories above. Please try to put your discussion in more appropriate sections. This section does cover the 1 Series, MINI Cooper and 8-Series vehicles: BMW 830i, BMW 840Ci, BMW 850i, BMW 850Ci, BMW 850CSi, M8, Alpina B12, BMW CS Concept and others.

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Old 04-18-2003, 01:01 AM   #1 (permalink)
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Question

I went to the BMW dealership and they said that the Check Engine Light in on because the O2 Sensor is not functioning properly. Can someone tell me exactly what it means and I dont exactly have the money right now to replace it so is it a big deal if I dont replace, but if i have to does anyone know where I can get done cheap?
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Old 04-18-2003, 01:13 AM   #2 (permalink)
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hey..well my thing is never get parts from the stealership.thats rule #1..hehe to much for them..but PM me or somethin and i could help you help for parts numbers and u could get it somewhere else...well ill just pm u
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Old 04-18-2003, 01:37 AM   #3 (permalink)
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02 sensor isnt a cruitial fix. all it does is help regulate and calculate the amount of exhaust gas that is expelled. i believe the reading from the O2 sensor and the intake sensor calculates the amount of fuel to add. .the only problem your gonna face is that the car is gonna run rich , meaning that your gonna burn a lot of gas up. if you have the money fix it, but like i said you really dont need to. dont get it done at a dealership they are expensive , the part itself carries a heafty price to begin with. dont get stuck with a $80-100 an hour bill as well. see if you can do it yourself, they arent that hard to do. the only hard part is getting the damn thing out. if not . then take it to a trusted mechanic and watch what he does. he will be able to show you what to do in the future.
good luck
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Old 04-18-2003, 01:39 AM   #4 (permalink)
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Quote:
Originally posted by Furious@Apr 17 2003, 11:37 PM
02 sensor is a cruitial fix. all it does is help regulate and calculate the amount of exhaust gas that is expelled. i believe the reading from the O2 sensor and the intake sensor calculates the amount of fuel to add. .the only problem your gonna face is that the car is gonna run rich , meaning that your gonna burn a lot of gas up. if you have the money fix it, but like i said you really dont need to. dont get it done at a dealership they are expensive , the part itself carries a heafty price to begin with. dont get stuck with a $80-100 an hour bill as well. see if you can do it yourself, they arent that hard to do. the only hard part is getting the damn thing out. if not . then take it to a trusted mechanic and watch what he does. he will be able to show you what to do in the future.
good luck
umm thx mark for the explainin..i cant think today..lol
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Old 04-18-2003, 04:05 AM   #5 (permalink)
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Niki has one for 200 - give or take
Just install it yourself, you just torque the old one off (yes i mean torque, those things are in for good) and screw the new one in. Also when you ask her for one, its a lamda sensor, thats the name in europe.
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Old 04-18-2003, 07:29 AM   #6 (permalink)
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wha kind of bmw u got?
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Old 04-18-2003, 10:42 AM   #7 (permalink)
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I have a 740iL
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Old 04-18-2003, 11:07 AM   #8 (permalink)
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Quote:
Originally posted by ManUtd29@Apr 18 2003, 08:42 AM
I have a 740iL
yr?
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Old 04-18-2003, 11:55 AM   #9 (permalink)
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Old 04-19-2003, 04:21 AM   #10 (permalink)
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Ok, I was browsing the net and I found this website that will sell it and it seems like its cheap

I found two though, does anyone know which one I would use for my '97 BMW 740iL

Use the site below, and see which one I should order

http://catalog.autopartsgo.com/?make=BM&ye...=1995&x=23&y=23
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Old 04-19-2003, 05:42 AM   #11 (permalink)
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Quote:
Originally posted by ManUtd29@Apr 19 2003, 04:21 AM
Ok, I was browsing the net and I found this website that will sell it and it seems like its cheap

I found two though, does anyone know which one I would use for my '97 BMW 740iL

Use the site below, and see which one I should order

http://catalog.autopartsgo.com/?make=BM&ye...=1995&x=23&y=23
IMO I'd buy it online and have a trusted mechanic install it ManUtd29..
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Old 04-19-2003, 06:24 AM   #12 (permalink)
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I will, but I dont know which one to get
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Old 04-24-2003, 10:13 AM   #13 (permalink)
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Quote:
Originally posted by ManUtd29@Apr 18 2003, 11:21 PM
Ok, I was browsing the net and I found this website that will sell it and it seems like its cheap

I found two though, does anyone know which one I would use for my '97 BMW 740iL

Use the site below, and see which one I should order

http://catalog.autopartsgo.com/?make=BM&ye...=1995&x=23&y=23
STOP

The page you listed is for a 1995, which is OBD I.

E38 OBD I has two oxygen sensors, and are of different specs from what you need.

You have OBD II, which unfortunately has four oxygen sensors; it has two regulating lambda probes and two lambda monitor probes, for a total of 4. There is a way to test them and pinpoint which one you need, but I only have the Bentley for 3 series, not 7 series, so the readings would be different.

If you let it go, it is true that you will run rich and lower your MPG. But in the long run you can also damage your cat and cause backpressure issues.

If you are replacing one, chances are your mechanic may advise you to replace all four at once, although they charge for each one separately. Go figure.

Here are the OE part numbers. You need two of each, total of four:
11 78 1 247 406 (regulating lambda probe)
11 78 1 742 051 (lambda monitor probe)
Some vendors crosslist OE part numbers with their own stock numbers. Be sure you contact them and verify if these are the ones you need before clicking checkout.
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Old 04-24-2003, 11:08 AM   #14 (permalink)
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HEY THAT SITE IS AEWSOME THE PRICES ARE MAD CHEAP..............


Does anyone have any experience buying from them because there prices are GREAT.
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Old 04-25-2003, 05:02 AM   #15 (permalink)
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Quote:
Originally posted by DesmoBob+Apr 24 2003, 10:13 AM--></span><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (DesmoBob @ Apr 24 2003, 10:13 AM)</td></tr><tr><td id='QUOTE'> <!--QuoteBegin--ManUtd29@Apr 18 2003, 11:21 PM
Ok, I was browsing the net and I found this website that will sell it and it seems like its cheap

I found two though, does anyone know which one I would use for my '97 BMW 740iL

Use the site below, and see which one I should order

http://catalog.autopartsgo.com/?make=BM&ye...=1995&x=23&y=23
STOP

The page you listed is for a 1995, which is OBD I.

E38 OBD I has two oxygen sensors, and are of different specs from what you need.

You have OBD II, which unfortunately has four oxygen sensors; it has two regulating lambda probes and two lambda monitor probes, for a total of 4. There is a way to test them and pinpoint which one you need, but I only have the Bentley for 3 series, not 7 series, so the readings would be different.

If you let it go, it is true that you will run rich and lower your MPG. But in the long run you can also damage your cat and cause backpressure issues.

If you are replacing one, chances are your mechanic may advise you to replace all four at once, although they charge for each one separately. Go figure.

Here are the OE part numbers. You need two of each, total of four:
11 78 1 247 406 (regulating lambda probe)
11 78 1 742 051 (lambda monitor probe)
Some vendors crosslist OE part numbers with their own stock numbers. Be sure you contact them and verify if these are the ones you need before clicking checkout. [/b][/quote]
Good call Bob..I remember you asking about the lambda sensor's over at the planet a while back..
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