melted cat, looking for 2nd hand replacement
Discussion
previous owner had the lambda sensor replaced ones a year but apparently the garage never bothered looking into the cause for their early demise.
Anyway this is how the cat looks like now:
it's the one with the metallic substrate (400cpi I think) and bigger bore as put on Tuscan S, T chassis RR and sagaris and carries part number S0662.
should look like this
Anyone decatted his car willing to sell me their undamaged one (or both)? decatting is no option and Shipping would be to Germany.
Anyway this is how the cat looks like now:
it's the one with the metallic substrate (400cpi I think) and bigger bore as put on Tuscan S, T chassis RR and sagaris and carries part number S0662.
should look like this
Anyone decatted his car willing to sell me their undamaged one (or both)? decatting is no option and Shipping would be to Germany.
Ummmmm Wow! that is a destroyed Cat!!Looks like temps are way too high? Certainly something wrong causing that to happen.
Maybe worth checking fuel system as it looks like its running far too lean to me.
Wouldn't want you to fix it and the same problem is repeated very quickly.
Anyone got any ideas?
tting sparklers!!It certainly has dumped raw fuel into the cat. Either ignition was cutting out massively or false air caused the mixture to go so lean that it wouldn't ignite by a spark.
I found a crack in the CF runner to nr 5 cylinder that must have led false air in but i doubt that caused it.
Since it's basically alpha-n based engine control it should not make a difference anyway as long as it enters ahead of the throttle butterfly.
It might have led to a lean mixture that the oxygen sensor picked up and the engine ecu richening the mixture to all 4-6 cylinders but that would not lead to this damage.
how true is the statement i read here somewhere that as a measure of precaution the fueling is increased to protect the engine against running lean/pinking/knocking when there is an error with the lambda sensor?
surely must not lead to this mayhem?!
I've had exhaust gas temperature sensor ports put on each exhaust branch (i.e. on each cylinder) and an extra boss for a wideband oxygen sensor in each manifold to make sure future problems won't go unnoticed.
I found a crack in the CF runner to nr 5 cylinder that must have led false air in but i doubt that caused it.
Since it's basically alpha-n based engine control it should not make a difference anyway as long as it enters ahead of the throttle butterfly.
It might have led to a lean mixture that the oxygen sensor picked up and the engine ecu richening the mixture to all 4-6 cylinders but that would not lead to this damage.
how true is the statement i read here somewhere that as a measure of precaution the fueling is increased to protect the engine against running lean/pinking/knocking when there is an error with the lambda sensor?
surely must not lead to this mayhem?!
I've had exhaust gas temperature sensor ports put on each exhaust branch (i.e. on each cylinder) and an extra boss for a wideband oxygen sensor in each manifold to make sure future problems won't go unnoticed.
Edited by hardtailer on Tuesday 22 October 22:14
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