on February 9, 2009, 8:16 pm, in reply to "Re: VW Golf - Failed MOT on emissions"
From what I can see from all the info is that the big clue is the slightly high Lambda reading. I would normally expect it to be low if the cat is ok. I have learned from esteemed colleagues on these forums that a slightly high reading indicates a faulty cat. Assume it is a rubbish aftermarket cat. Could try a second hand VW cat and see what happens. Obviously it should go without saying you always take a risk with 2nd hand stuff and could confuse the issue.
Regards
Pete M
Message Thread 
VW Golf 1.4 AHW 2000 - MOT emission failure CO 0.8% HC 400 # - Ian Staples February 8, 2009, 7:55 pm
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