O2 sensors?

[dobbslc]

Thanks for the replies
I've realised the plugs and air filter should have been changed 10k miles ago so they've now been ordered, the plug gaps was too big but they were a nice clean light biscuit colour so at least not covered in oil, I doubt that's causing the fault though. The cat is part of the exhaust manifold on this car so any advice for getting the bolts out in one piece?

 

[dobbslc]

£50 for an eBay cat?
Worth it or not?

Pardon our interruption...

 

[arther dailey]

brother sticks in cat cleaner when his goes off on the rav 4 , seems to last about 3 years then another dose .

 

[dobbslc]

I was thinking about that as it's only a sporadic EML so can't be miles off.

 

[dobbslc]

I've just bought some Wynn's cat cleaner to try and going by the list of health warnings on the label it's got to be good!
New plugs and filter are here too...

 

[jmp49]

I washed out a CAT by putting it in a solution of strong neat caustic then backwashing it with a hose a few times after the car it was on had a engine failure that filled it with oil.
Diagnostic data showed huge cat pressures and indicated a blocked poisoned cat.
I was in a "what do I have to loose situation" but was super skeptical about a home fix like this but 30k later, same cat, back pressures in the live data are all low, emissions in spec.
It was a horrible job though, its like going back to the days of decoking 2 stroke expansion chambers in a bin of the stuff wearing goggles and thick gloves and a mask while trying not to breathe the choking fumes outside.

 

[dobbslc]

I've just bought some Wynn's cat cleaner to try and going by the list of health warnings on the label it's got to be good!
New plugs and filter are here too...

Light back on so I've ordered a new CAT.
It's made by BM in the UK.
It's tiny

 

[Seadog]

It's not as small as this one

 

[dobbslc]

An update.
The cat has been fitted and seems to have improved the post cat sensor readings on the live data on the scan tool.
Before.



After


A much steadier line.

But I'm not impressed with the fit of this BM catalytic converter to say the least!
The stud for the mounting bracket was replaced by a threaded insert that didn't line up. The downpipe flange was twisted miles off where it should have been so I had to drill out the exhaust flange holes to get the bolts in. Very poor quality control. I should have just bought a ****ty Chinese one off Ebay instead of thinking buying British was a good idea

Anyway it's in!




None of the bolts sheared off which on an 18 year old car I think is amazing!
And the exhaust ports are tiny

 

[voipio]

Could the catalytic converter been rotated a bit to line up the bolt holes?

 

[dobbslc]

It's part of the manifold.