Duratec R400 Lambda Sensor

[adrianwindo]

Hi All

Does anyone know which Lambda sensor is required in the R400D and the cable length?

Any tips for removing one?  Which socket size is required or does a spanner work just as well?

 

many thanks

[SM25T]

If you are removing onto, you may find it very very tight. A few drops of Plusgas the day before might help. You can't use a normal socket as the cable gets in the way. Ring spanner safest so it can't slip off ... if you have room to use it.

[ChrisC]

Yer I remove the cat to remove an old lambda sensor in case I slip and hit the side.  (from memory) I think they are 22mm, there are special sockets out there for the job, but a good old ring spanner will be fine if you have disconnected it first.    My 420R has a MG Rover box with part number MHK10006, that was supplied under same part number from CC.    You can still get genuine Rover parts from Rimmer Bros.  

[John Vine]

Yes, 22mm.  My R400D has the Bosch  258 003 229, which is the same as the Rover  MHK10006.  IIRC, the cable length is around 550mm (more than enough for an R400D).

JV

[Dr Slotter]

In addition to the usual penetrants as SM25T suggests, if it is REALLY stuck you might find a shock load applied clockwise using a mallet and ring spanner does the job. I have a set of large ring spanners with a slot ground out of them for the wire to go through for this very job (and headlamp adjustment). I also concur with John about size and part number of lambda.

 

[Ged]

Can anyone confirm that it will be the same part No for an R300D?

[Dr Slotter]

Yes, it is.

[Ged]

Thank you, thought it would be.

[adrianwindo]

Many thanks for all your ideas.  I've managed to remove the sensor and swapped exhaust systems, putting back the catalytic converter all ready for the MOT.