Hi Alan & MartinI have a four-channel scope, but on this occasion I decided it was unnecessary to capture all four sensors as the fault codes pointed toward both cats being inefficient. Also, this job is a freebie for a mate & a learner for me .
These captures are taken from the offside bank only. The last capture shows a reduced switching frequency because it was at idle & is quite normal.
Martin wrote >>>I would send them back under warranty<<<
Funny you say that Martin, as I suggested from the start, that he should put the ball in their court (Euro Car Parts). Still, it has been interesting to see it unfold.
I was quite impressed with the imaginative thinking of the “Jag Man” with the idea of fitting a single lambda sensor behind the rearward cat (this has three cats by the way).
Cheers for now
Dave (Hill)