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Posted by william on July 1, 2006, 6:22 pm, in reply to "Re: Ford Focus 1.6 Zetec 2002 - CAT Poor efficiency"
The predominant failure mode for high mileage catalysts is chemical deterioration (phosphorus deposition on the front brick of the catalyst), not thermal deterioration.
as above it is a chemical failure of the cat and the reflashing of the ecu extend the time factor for the front to rear lambda threshold change until the cat has run longer to pass the catalyst efficiency test.
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| Message Thread:
- Ford Focus 1.6 Zetec 2002 - CAT Poor efficiency - Sean Connelly June 30, 2006, 3:20 pm
- replies - Peter Warman June 30, 2006, 5:08 pm
- replies - Tom Yates June 30, 2006, 5:47 pm
- replies - Sean Mc Gettigan June 30, 2006, 6:08 pm
- replies - mikeg June 30, 2006, 6:16 pm
- replies - Michael Whitworth June 30, 2006, 7:09 pm
- replies - Paul Rose June 30, 2006, 10:28 pm
- replies - Dave Hill June 30, 2006, 10:39 pm
- replies - Eddie Zyla June 30, 2006, 11:02 pm
- replies - Paul Rose June 30, 2006, 11:34 pm
- replies - Nigel Bennett June 30, 2006, 10:33 pm
- replies - mike g July 1, 2006, 9:23 am
- replies - Peter Warman July 1, 2006, 3:29 pm
- replies - Michael Whitworth July 1, 2006, 3:48 pm
- replies - Sean Mc Gettigan July 1, 2006, 4:15 pm
- replies - Alan Kane July 1, 2006, 5:13 pm
- replies - william July 1, 2006, 6:18 pm
- replies - william July 1, 2006, 6:22 pm
- replies - Shaun Dale July 20, 2006, 11:54 am
- replies - Sean Connelly July 4, 2006, 9:00 am
- replies - Sean Connelly July 18, 2006, 9:15 am
- replies - Nigel Bennett July 18, 2006, 7:52 pm
- replies - kevin busbridge July 18, 2006, 9:28 pm
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