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I didn't bring the appropriate tools with me to the shop today to just gut the catalytic converter for bank 2.
Can't really help whether a cat problem can induce lean fault codes.
But I don't think you can hollow out a converter on a 2003+ model without causing more trouble. 2003 is when Jaguar switched from narrow band O2 sensors to wide band. Through 2002, the downstream sensors only monitored catalyst efficiency. But with the switch to wide band, the downstream sensors have the additional function of fine tuning fuel trims.
With a hollow cat, this expected input will be way out of range. I'm not sure how the computer will respond with only partial feedback for fuel scheduling. It might even stay in open loop mode, and cut way into performance and fuel economy. Worst case, the computer may go one step further and convince your daughter to marry a drummer. Not sure you'd want that to happen.
I'm not keen on that graph as I can't really grasp it, but I'd for sure want to know what both banks are like. If you start with the usual hot engine, parked, at idle & about 2500rpm and it's mainly the LTFTs so long as the STFTs don't look like it's desperately trying to learn (i.e. not in the process of moving the LTFTs significantly).
Sorry about the delay but been, er, en famille
If you can read the freeze frame data it would be worth doing, too.
Yes, by 2003 you'll have widebands. You can fool the PCM using (rear) O2 extenders I gather, but it's illegal here anyway so not something I'd go near.
But first let's see what data you can gather if you're willing/able.
I'm not keen on that graph as I can't really grasp it, but I'd for sure want to know what both banks are like. If you start with the usual hot engine, parked, at idle & about 2500rpm and it's mainly the LTFTs so long as the STFTs don't look like it's desperately trying to learn (i.e. not in the process of moving the LTFTs significantly).
Sorry about the delay but been, er, en famille
If you can read the freeze frame data it would be worth doing, too.
Yes, by 2003 you'll have widebands. You can fool the PCM using (rear) O2 extenders I gather, but it's illegal here anyway so not something I'd go near.
But first let's see what data you can gather if you're willing/able.
I agree. It looks like the ltfts are high positive but stfts are high negative???
If your state has periodic emissions testing for registration renewals, you are eventually going to have to deal with a proper replacement anyway... There are perfectly adequate catalysts out there in the aftermarket that will not break the bank like an OE cat from Jaguar would.