O2 sensors in exhaust - MINI Cooper Forum

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post #1 of 7 (permalink) Old Apr 18th, 2014, 06:03 PM Thread Starter
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O2 sensors in exhaust

Maybe this has been covered elsewhere, and if it has, i apologise!
I have just bought a new exhaust and cat pipe for my mini one, it was blowing at the flexi joint.
Planning on changing it early next week, but from prior experience i guess i will struggle to get the lambda sensors out of the pipe!
I was planning on replacing both while i am at it, are they both the same? Or are they different sensors?
I see some on ebay for £30, should i be wary of them? Or will they be ok?
Thanks
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post #2 of 7 (permalink) Old Apr 18th, 2014, 11:24 PM
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Hi ya

You may find when you come to do the job you only have one O2 sensor on your mini one it was normally only the cooper s that had two. The one post cat normal has a blanking plug in it.
I have changed a few and never had a problem getting the O2 sensors out, just use something like plus gas (penetrating oil) and the correct tool should not have a problem

The hardest bit about changing the manifold is undoing the nuts at the cat joint again a good penetrating oil and heat normally fixes it but I have had to cut a couple off.
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post #3 of 7 (permalink) Old Apr 20th, 2014, 09:07 AM Thread Starter
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Thanks for your reply.
I have the new exhaust, and have seen the 2 holes, will be giving it all a good squirt later today in prep for fitting later in the week.
Thanks for your advice, hopefully the sensors come out ok!
Thanks again
Invernessguy
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post #4 of 7 (permalink) Old Apr 20th, 2014, 11:03 AM
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Quote:
Originally Posted by Invernessguy View Post
Thanks for your reply.
I have the new exhaust, and have seen the 2 holes, will be giving it all a good squirt later today in prep for fitting later in the week.
Thanks for your advice, hopefully the sensors come out ok!
Thanks again
Invernessguy

Hi ya not a problem
they only make one exhaust for the first gen petrol minis all have two O2 bosses on yours there will be one sensor and one blank.
The manifold is a bit of a fiddle to get past the anti roll bar but it will come out if I had to remove the upper heat shields but that only a couple or nuts.

This link may be of help to you

http://www.northamericanmotoring.com...ll-how-to.html
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post #5 of 7 (permalink) Old Apr 20th, 2014, 07:22 PM Thread Starter
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Thanks for the link, weather was too nice to spend under a car today, will get to it through the week, thanks again
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post #6 of 7 (permalink) Old Apr 24th, 2014, 10:10 PM Thread Starter
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Thanks for the help, job went well, took just over an hour, 2 sensors on exhaust, but nothing was seized so no probs. i can hear myself think again!
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post #7 of 7 (permalink) Old Apr 24th, 2014, 10:11 PM
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Quote:
Originally Posted by Invernessguy View Post
Thanks for the help, job went well, took just over an hour, 2 sensors on exhaust, but nothing was seized so no probs. i can hear myself think again!
:-)
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