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[Kevin Wood]

Wonder if slapping the latest engine firmware on would help?  Has anyone got the latest on yet, and still suffering?

I'm more than willing to be a guinea pig next time our paths cross.

I would imagine if this sort of thing started to happen to higher mileage cars under warranty the temptation for VX to tweak the firmware rather then replace umpteen cats under warranty would have been great....

Kevin

[Marks DTM Calib]

Unless there is a newer one in the 2008 TIS then Bob Dent has it on his....

[VXL V6]

Got the latest on mine (Unless there is a newer one than last August). You checked it when you did the climate and Autobox Mark.

[TheBoy]

Unless there is a newer one in the 2008 TIS then Bob Dent has it on his....

If only I knew how to find out  

[TheBoy]

Wonder if slapping the latest engine firmware on would help?  Has anyone got the latest on yet, and still suffering?

I'm more than willing to be a guinea pig next time our paths cross.

I would imagine if this sort of thing started to happen to higher mileage cars under warranty the temptation for VX to tweak the firmware rather then replace umpteen cats under warranty would have been great....

Kevin

Remind me for a freebie upgrade at lakes, or before if we meet before

[Kevin Wood]

Thanks Would be nice to try although it's looking less likely unless something came along in 2008.  :-/

Meanwhile I'll keep my eye out for some Lambda bosses.

Kevin

[Albatross]

Or re-position the sensors after the main cats.....mgiht not get hot enough though.

My orange EML light comes on after about 2 days and I don't have the ability to clear it myself.

Am I looking at a weld job on my exhaust?

What if I wanted to replace the faulty CAT, any idea on the best route? new? refurb? What would this cost?

How about I just go to longlife, get them to build me an exhaust which already has the extra bosses?

Wouldn't it be an idea to replace the faulty CAT? Perhaps I could get this as a different sort of CAT that might last longer?

I just want the problem solved properly really.  :-/

[Kevin Wood]

It seems like the problem is a design issue rather than a faulty cat. A new cat might temporarily solve the problem at considerable expense but as soon as its' efficiency has dropped a little it'll be back. A 2nd hand cat is unlikely to be any better IMHO.

The problem doesn't affect MOT emissions as the main cat is more than adequate so I'd say the best policy is probably to live with it. :-/

It would be interesting to try the relocation of the Lambda sensors but probably only on one car until it's proven to work.

Kevin

[Albatross]

It seems like the problem is a design issue rather than a faulty cat. A new cat might temporarily solve the problem at considerable expense but as soon as its' efficiency has dropped a little it'll be back. A 2nd hand cat is unlikely to be any better IMHO.

The problem doesn't affect MOT emissions as the main cat is more than adequate so I'd say the best policy is probably to live with it. :-/

It would be interesting to try the relocation of the Lambda sensors but probably only on one car until it's proven to work.

Kevin

Is there a volunteer for this yet? (I can't weld) , but I'm happy to donate my car as a ginuea pig if it can be put back afterwards and bunged up properly.

If I got a new exhaust built by longlife soon, they'd be able to design this in won't they? (Assuming the test is successful obviously)

[Kevin Wood]

It seems like the problem is a design issue rather than a faulty cat. A new cat might temporarily solve the problem at considerable expense but as soon as its' efficiency has dropped a little it'll be back. A 2nd hand cat is unlikely to be any better IMHO.

The problem doesn't affect MOT emissions as the main cat is more than adequate so I'd say the best policy is probably to live with it. :-/

It would be interesting to try the relocation of the Lambda sensors but probably only on one car until it's proven to work.

Kevin

Is there a volunteer for this yet? (I can't weld) , but I'm happy to donate my car as a ginuea pig if it can be put back afterwards and bunged up properly.

If I got a new exhaust built by longlife soon, they'd be able to design this in won't they? (Assuming the test is successful obviously)

I guess if you're planning on having an exhaust made that could be incorporated but I'd probably be inclined to keep the front cat sections and have them make a cat back system.

It only really needs one side modified as a test - just see if it removes one of the codes. Presence of the code on the unmodified bank will confirm that it's solved in the presence of the conditions that caused the original error.

Not sure if a boss could be welded on in-situ or if the exhaust would have to be dropped. Ideally Lambda sensors should be mounted above the horizontal, especially if they're in a cold section of exhaust, to prevent condensation from blowing onto the (heated) element and causing it to crack. Will have to have a peek under the car.

Kevin

[Albatross]

It seems like the problem is a design issue rather than a faulty cat. A new cat might temporarily solve the problem at considerable expense but as soon as its' efficiency has dropped a little it'll be back. A 2nd hand cat is unlikely to be any better IMHO.

The problem doesn't affect MOT emissions as the main cat is more than adequate so I'd say the best policy is probably to live with it. :-/

It would be interesting to try the relocation of the Lambda sensors but probably only on one car until it's proven to work.

Kevin

Is there a volunteer for this yet? (I can't weld) , but I'm happy to donate my car as a ginuea pig if it can be put back afterwards and bunged up properly.

If I got a new exhaust built by longlife soon, they'd be able to design this in won't they? (Assuming the test is successful obviously)

I guess if you're planning on having an exhaust made that could be incorporated but I'd probably be inclined to keep the front cat sections and have them make a cat back system.

It only really needs one side modified as a test - just see if it removes one of the codes. Presence of the code on the unmodified bank will confirm that it's solved in the presence of the conditions that caused the original error.

Not sure if a boss could be welded on in-situ or if the exhaust would have to be dropped. Ideally Lambda sensors should be mounted above the horizontal, especially if they're in a cold section of exhaust, to prevent condensation from blowing onto the (heated) element and causing it to crack. Will have to have a peek under the car.

Kevin

Wouldn't welding an appropriately threaded nut onto the top of the exhaust pipe just behind the rear CAT suffice as a lambda sensor boss?

Then if this proves not to work an equally appropriately sized short bolt would work as a bung?

If someone who can weld wants to help test this out and isn't a million miles away from me is around, I'd be happy for a bolt to be welded to the top of my exhaust (one side) to try it.

By the way which side does code 0420 refer to?

[Kevin Wood]

Yep. The boss is effectively just a chunk of metal with the right thread on it.

Kevin

[Albatross]

No takers?

[VXL V6]

By the way which side does code 0420 refer to?

Bank 1 IIRC

Will let you know for sure when I next read mine.

[Albatross]

By the way which side does code 0420 refer to?

Bank 1 IIRC

Will let you know for sure when I next read mine.

Cool thanks, "bank 1"?

Is that right, left, port or starboard when it's at home? :-/