Where can I buy z4M O2 sensors

[zm power]

I had my engine light turned on few days ago , BMW has told me that I've got to replace one O2 sensor and the recommend me replace both, I've phoned to bosh here in spain but the told me that they only can sell out the O2 sensor to BMW, no-one else
in BMW each sensor costs 230 euros :headbang:
anyone knows if I can buy it in UK directly to bosh???

references are:
11787837564
11787837565

thanks a lot

 

[Tref]

How are they arranged on this engine? inline or in two separate manifold 'banks'? You may only need to replace one.

There are a few places - best phone to check you get the right parts though

http://www.ecolambda.co.uk/main/bmwntk2.htm
http://www.lambdapower.co.uk/
and places such as http://www.eurocarparts.com/ecp/p/Car-Parts

Edited to add - you may find them cheaper in Germany!

 

[Andy]

believe it's one in each bank on the M.. I've had each replaced.

I could probably source them for you, but that cost above isn't far off BMW cost price. I could get them both for 400 euros + shipping, PM me if you need more info.

 

[zm power]

ok thanks a lot guys, I'm going to try to find them
andy if I don't find them anywhere I'll let you know

I Can't explain how the O2 sensor could be off with only 19000km

regards

 

[Andy]

My first one at about 10,000 miles, my second at about 22,000 miles. It's about £350 all-in to get one replaced if you're not in warranty I believe.

Apparently they are in a worse position on the Z4M than the M3's, so get fouled easier.

Seems to be very common on here.

 

[ian in lancs]

I've had one replaced at 6000mls then two replaced at 15000mls IIRC theres a tread on her tracking failures but no indication of cause.

 

[zm power]

I put th wrong reference , the failure is in the O2 sensor before de catalyst, when the car is stopped I have Rough idling but only when the car is cold when the oil gets 90º all goes well, I don't know if this Rough idling has something to do with the O2 sensors....

 

[Shipkiller]

There are four O2 (Lambda) sensors.

Two (one in each bank) to monitor the exhaust flow BEFORE it gets to the catalytic converter. These are called the Pre-Cat O2 sensors. Then there are two after the catalytic converters, called the Post-Cat O2 sensors. They can also be called B1S1 (Bank 1, Sensor 1 (pre cat)), B2S2 (Bank 2, Sensor 2 (post-cat)). You get the idea.

The two that fail the most often are B1S1 and B2S1, the pre-cat O2 sensors.

Here is a picture of the S54 Pre-Cats.
http://www.realoem.com/bmw/showparts.do?model=BT92&mospid=49344&btnr=18_0661&hg=18&fg=10

Post-Cats.
http://www.realoem.com/bmw/showparts.do?model=BT92&mospid=49344&btnr=18_0658&hg=18&fg=10

The best price (on-line) I have found was (in the US) $161.00.

The only reason I can figure out is due to the extra long electrical wire on the S54 Lambda sensors, which would make that wire extremely expensive..

Or, it is the ///M tax....

 

[Shipkiller]

I put th wrong reference , the failure is in the O2 sensor before de catalyst, when the car is stopped I have Rough idling but only when the car is cold when the oil gets 90º all goes well, I don't know if this Rough idling has something to do with the O2 sensors....

Are you sure your Emissions Air Pump is working.

http://www.realoem.com/bmw/showparts.do?model=BT92&mospid=49344&btnr=11_3866&hg=11&fg=50

The pump, blows air into the exhaust manifold, adding extra oxygen into the exhaust stream to help the catalytic converters to function better until the system is up to temp. It (the pump) turns on at start up and runs for approx. 90 secs...

It usually takes the O2 sensors between 60 and 90 seconds to heat up to the required 600' operating temperature, buy way of their internal heating element.

 

[zm power]

Hi Shipkiller:

when I start the engine the revs come up to 1200 revs during one minute more on less(as before the rough idle problem ) during this phase there aren't rough idling, after that goes down to 850revs aprox and the rought idling starts, when the oil get's 90º more on less the rough idling stops

what could happen if in the 60 o 90 seconds the O2 sensors doesn't reach the optimal work temperature???? ould be that the casue of the rough idling

please could you tell me where can I buy the pre cat O2 sensors in the US????




thanks a lot

 

[Andy]

is it not worth plugging it into an OBDII machine and reading fault codes? O2 sensors would give both a specific error code and their actual reading, IIRC.

I'd want to be very sure before I bought the bits.

 

[zm power]

Hi Andy I ve got the fault codes

the conclusion is: "we recomend to replace the O2 sensor before the catalyst" but my car has the egine light turned on since 1500km ago due to a lambda failure and now suddendy the rought idling starts.

regardssss

 

[outrun]

http://cgi.ebay.co.uk/Front-Lambda-Probe-Oxygen-Sensor-BMW-5-X3-Z4_W0QQitemZ140311787867QQcmdZViewItemQQptZUK_CarsParts_Vehicles_CarParts_SM?hash=item20ab3bf95b&_trksid=p3286.c0.m14&_trkparms=65%3A12%7C66%3A2%7C39%3A1%7C72%3A1683%7C240%3A1318%7C301%3A1%7C293%3A1%7C294%3A50

There's few on Ebay but not for the M. Maybe try asking the Ebay sellers if they can get them?

 

[Shipkiller]

I buy a lot of stuff from these guys: BMWPartzdirect http://www.trademotion.com/partlocator/index.cfm?siteid=214760

Or here: Tischer http://www.trademotion.com/partlocator/index.cfm?siteid=214672&catalogid=0

 

[Shipkiller]

Hi Shipkiller:

when I start the engine the revs come up to 1200 revs during one minute more on less(as before the rough idle problem ) during this phase there aren't rough idling, after that goes down to 850revs aprox and the rought idling starts, when the oil get's 90º more on less the rough idling stops

what could happen if in the 60 o 90 seconds the O2 sensors doesn't reach the optimal work temperature???? ould be that the casue of the rough idling

I think the engine going to 1200 RPM at start up and staying at 1200 for a minute is due to the DME. I don't know because I don't have a ///M yet... Someone else will have to tell you if that is normal, but I bet it is...

It is unlikely, but possible, that a bad O2 sensor is causing your idling problem. You may have TWO problems, or they are all interconnected..

Fix the O2 sensor problem first. Then tackle the idling issue.

If you replace the O2 Sensors yourself (very easy), make sure to remove the battery for about a minute to clear all the learned values the DME has in memory. Sure, you could just plug in new sensors and leave it to the DME to SLOWLY figure it out, but by clearing the DME memory, you are allowing the DME to establish new BASELINE values for each individual sensor attached to itself...

 

[zm power]

Thanks a lot for the links Shipkiller, sadldy they don't have international shipping , I've seen an universal O2 sensors that could fit in my Z4 and cost about 90 euros

Regards

 

[Andy]

Eeek.. don't know a lot about it, but would you risk it ?

Every time it hiccupped or spat I'd blame them.. Id have to pay extra, even if it was double.

 

[Shipkiller]

Do NOT use universal O2 sensors. The S54 is so highly tuned, I doubt they would actually work and it would be money wasted and you would still be buying the proper ones....

 

[Andy]

x2

 

[Shipkiller]

I hate to say it but you drive an ///M. There is an ///M tax. Just open your wallet and fix the car...

I will have to put up with the ///M tax in Dec when I get MY ///M...