Replacement CAT - opinions?

BOSTIK

Hi all,

Looking for a steer:

2001 Corolla 1.4VVT1 Saloon, intergalactic mileage (326k).

Just failed NCT on emissions:

Engine Temp 96 degrees

Low Idle: 0.30 CO (Pass) 0.5 upper limit

High Idle:0.36 CO HC 98 ppm (Fail) 0.3 upper limit

Lambda 1.02

Tester reckons CAT is done, tbf the guy gave it a fair chance, revved the stones out of it for a while.

Needed a retest anyway due to corroded brake pipe, so not too bothered. Car is running well enough, getting about 530 miles from a full tank

Are these yokes any good? Seems like a reasonable price for a new part.

https://www.micksgarage.com/d/catalytic-converters/toyota/toyota-corolla/corolla-1997-to-2002/1-4-16v-zze111_-97-1398/products/299935-1972-14692/eec-catalytic-converter


Cheers

joujoujou

It missed emmission by a very tiny bit, I'd try dipetane first.

Now, that cat you linked to will be fine, however generic one (it must be welded in anyway) off local motor factors may be cheaper.

Does it burn much oil, by the way?

BOSTIK

joujoujou wrote: »

It missed emmission by a very tiny bit, I'd try dipetane first.

Now, that cat you linked to will be fine, however generic one (it must be welded in anyway) off local motor factors may be cheaper.

Does it burn much oil, by the way?

I'd already dosed it with Cataclean before the test, so I'm a bit fearful that additives alone mightn't be enough.

It's not too bad on the oil, I'd say about half a litre every 1,000 miles.

It was a bit low on power earlier in the year, but no fault code was showing.
Eventually the light appeared, transpired to be cause by a split hose near the air flow meter. When that was fixed the car drove much better, whether that damaged the CAT or not I don't know.

joujoujou

Oil burned throughout the years more than likely did the damage to the cat. And yeah, you treated it with cataclean and did not help enough. Get a new cat.

And switch to A5/B5/C2 oil preferrably, like this one.

BOSTIK

joujoujou wrote: »

Oil burned throughout the years more than likely did the damage to the cat. And yeah, you treated it with cataclean and did not help enough. Get a new cat.

And switch to A5/B5/C2 oil preferrably, like this one.

Cool, we'll see how it goes, got a few weeks to retest anyway. Cheers again

joujoujou

You're welcome.

Whatever the news regarding retest, let us know.

BOSTIK

joujoujou wrote: »

You're welcome.

Whatever the news regarding retest, let us know.

Got me a cert with a 2020 expiry date tonightðŸ‘

toyotafan

BOSTIK wrote: »

Got me a cert with a 2020 expiry date tonightðŸ‘

Great. Congratulation. What did ye do with it to pass? A new CAT?

BOSTIK

toyotafan wrote: »

Great. Congratulation. What did ye do with it to pass? A new CAT?

Yeah, got the one linked above. Perfect fit, and the CO results for Low & High Idle were both close to 0.00 (I don't have the fail sheet handy).

Needed a complete new brake line though, mechanic said I shouldn't have been let drive it home the first day. Anyway she's in good fettle now, cheers.