Thread: O2 (Lambda) Sensors

definately genuine, went through this before and so have others. i even had bosch ones, still played up weird because it is a motronic system, still in the end genuine lr ones fixed the problem. instantly.


jc

Originally Posted by justinc

i even had bosch ones, still played up

The Bosch ones I bought had the LR part number etched into them and looked exactly like the OE. I'm sure they were just re-boxed OE.

Set of genuine LR brand new ones ordered for mine were slow out of box the other day - British Offroad tested and didn't like them so installed some good second hand ones that reacted quickly - its vital for a sequential LPG system that the 02's are good.

Cheers

The Bosch ones I had did not have a LR part number. This was about 4 years back, things may be different?

JC

Be careful buying them from overseas. A customer, local workshop, came around with a new and an old sensor. He said this new one won't screw into the boss on the exhaust. He bought a carton of new ones from the USA on e-bay. Genuine Bosch parts. I measured and gauged them and they were different threads, the old one was metric and the new one NS. Only a whisker of difference but enough to prevent screwing in. I forget the diameter, probably 5/8" which is only a few thou different to 16 mm, but one was 1.5 pitch and the other 16 tpi (I think). Sold him a tap and all was well.

Originally Posted by justinc

The Bosch ones I had did not have a LR part number. This was about 4 years back, things may be different?

JC

Maybe they've changed, or maybe bosch sells different stuff in different markets. The part number I used was 15175. [ame="http://www.amazon.com/Bosch-15175-Oxygen-Sensor-Fitment/dp/B0018R5SOW"]Amazon.com: Bosch 15175 Oxygen Sensor, OE Type Fitment: Automotive@@AMEPARAM@@http://ecx.images-amazon.com/images/I/31M4nc-1mrL.@@AMEPARAM@@31M4nc-1mrL[/ame]

but like the photo here: Land Rover Discovery Series II OEM Oxygen Lamda Sensor they had the part number etched into it, and looked exactly the same, even down to the color of the connector. I bought some off brand before on my other D2, and the engine ran rough and sometimes I'd get codes for a bank running lean or rich, so I'm all for OEM sensors.

Originally Posted by justinc

definately genuine, went through this before and so have others. i even had bosch ones, still played up weird because it is a motronic system, still in the end genuine lr ones fixed the problem. instantly.


jc

Hi Justin what were the symptoms? I keep getting fault codes with Nanocom re signal too low etc, Fitted replacement o2 sensors and still get the same codes.

Had sme pretty obvious ones, excessive cold start fuelling and very poor economy and rich hot idle. At the time my diagnostic gear was away for repairs, customer had it checked at another shop and they mentioned downstream O2 sensor faults (There ARE no downstream sensors ) so I took a squiz. Vehicle had a history of misfiring due to leads and coil packs, which was finally addressed but the overfuelling persisted. They had in the process of repairing his vehicle soldered in some no name brand sensors, which I replaced with some Bosch boxed universal ones. Still no change. Then I fitted some OE ones WITH plugs already attached.

problem solvered

I am not certain whether it was due to the soldering process or what, but genuine ones out of the LR boxes solved the issue immediately.


JC