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Thread: Catalytic Converter question

  1. #17
    Looser Konan555's Avatar
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    Quote Originally Posted by Shad
    Mk2 CRX VTEC cars all came with CATs, as did the EDM models with the D16A8 non-VTEC engine. However they will all pass the MOT without a cat due to when they were made

    If your car has a CAT and you take it out, make sure you know how it will affect the engine management. If there's an O2 sensor after the CAT in the exhaust, it will probably switch into 'limp home mode' unless you fake the sensor reading or remap the ECU.
    In this case, MK3 catted fiesta, it will only have one before the cat.

    Belive it or not, there where some cars without closed loop fueling and cat.... and some with carbs!

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    1992 K reg on has to have a cat test, any car before does not, even if it has a cat fitted. If your car fails that test it has to have another where the tester has to use limits for the make and model and engine code, so any car not fitted with a cat from new will have the 3.5% co test.

  3. #19
    Zad
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    The law seems specific yet vague (typical bureaucracy)

    All petrol-engined class IV vehicles first used on or after 1st August 1992 (i.e., K prefix registrations onwards) will have to go to a catalyst MoT station.

    Not all petrol-engined class IV vehicles first used on or after 1st August 1992 had to be fitted with a catalyst. However, the catalyst station will be able to identify whether or not a catalyst should be fitted and apply the appropriate emission tests. Vehicles fitted with catalysts and first used before 1st August 1992 are not subject to the catalyst emissions test.
    Google seems not to be able to produce anything definite, and the .gov.uk sites seem similarly confusing. As has been said though, make sure it really is the cat that has gone, the cat sensor may have failed.

    Mike

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    When I say cat test, it means the exhaust emission test, the cat itself is not tested, or it's only tested as part of the exhaust system.

  5. #21
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    • Nox's system
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    Benefits of having a 1982 car (and a friendly garage!!)

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  6. #22
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    OK i'm really confused now, i'll start again..

    Will this fit on my dads car? http://www.sportcats.co.uk/product_i...oducts_id=2256

    I sent an email to the people who run the website, and they said it should do as it has the same engine code (ZH16).

    The car is a Ford Fiesta SI, 1994 M reg.

    Is there anywhere else I can check this is correct?, the guy seems pretty trustworthy, but in the last email he asked me about where I found his website because he's been trying to advertise it around (so it's not a big site obviously). He seems alright though.

    Thanks

  7. #23
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    Quote Originally Posted by XA04
    OK i'm really confused now, i'll start again..

    Will this fit on my dads car? http://www.sportcats.co.uk/product_i...oducts_id=2256

    I sent an email to the people who run the website, and they said it should do as it has the same engine code (ZH16).

    The car is a Ford Fiesta SI, 1994 M reg.

    Is there anywhere else I can check this is correct?, the guy seems pretty trustworthy, but in the last email he asked me about where I found his website because he's been trying to advertise it around (so it's not a big site obviously). He seems alright though.

    Thanks
    That looks to be the correct one, the fact it's a 1.6 and the year is what it'll go on, not the model.

  8. #24
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    OK cool, thanks.

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