O2 sensors - help please

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eightinavee

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3,956

Location

UK.

• Nov 5, 2011

• #21

Find a stockist of NGK/NTK components for the sensors,get the exact right ones from their catalogue.
As for the threads the easiest way out of that is to weld on new bosses,as here; Lambda Boss M12 Exhaust Oxygen Sensor Nut And Bolt Plug | eBay

 

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Steve Ashworth

Active Member

Posts

419

• Nov 5, 2011

• #22

Thanks eightinavee.
That's really good advice. The boss in the link looks deeper than I expected.
Cheers.

 

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Steve Ashworth

Active Member

Posts

419

• Nov 7, 2011

• #23

Hi,
Been through the NGK/NTK online catalogue & they don't have an option for models after 12/98. Mine is a 2001 model! Nothing straight forward...

 

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eightinavee

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Location

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• Nov 7, 2011

• #24

OK, yours is Bosch,not Gems,in that case it was,(Not long ago anyway.) just as cheap to get them from LR,and the bosses will need to be 18mm,not 12mm. Your Bosch sensors will be 0-1v Zirconias,not the 5-0v Titanias that Gems had.

 

Irishrover

Well-Known Member

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5,317

Location

La Trimouille, Vienne, France

• Nov 7, 2011

• #25

Steve Ashworth said:

Manged to get the Os sensoes out. Problem is both sheared off and lefet the thread in so its off the road now....
I will have to remove the exhaust.
Will if be possible to tap a new thread - if so what thread do I need to get?
Cheers.

Click to expand...

:behindsofa:

The vast majority are M18 X 1.5 threads and take an 22mm a/f spanner

 

Last edited: Nov 7, 2011

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eightinavee

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3,956

Location

UK.

• Nov 7, 2011

• #26

The LR part # is MHK100940 and their retail is now £78.26 + Vat each. Island 4x4 do them for £33 something + Vat,but it does not say who made them.

 

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Steve Ashworth

Active Member

Posts

419

• Nov 7, 2011

• #27

Thanks,
They don't seem bad for price @ £65

 

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Steve Ashworth

Active Member

Posts

419

• Nov 13, 2011

• #28

Removed the exhaust section - bloody hell the nuts were tight including cross member.
Managed to knock out bits of old sensor and run a tap through...
Cleaned out quite nicely so didn't have to weld in new boss.
Fitted new sensors and put it back together, cleared faults etc.
Took it for a run and very encouraging. Last week I could only get 9.5 mpg, even down hill! Today I averaged 14mpg on a mixed run including hills so very pleased. It's hilly where we are so that's about as good as I can expect.
Cheers!