E46 330Ci Engine Warning Light
Discussion
This came on. Engine felt a bit hesitant at low revs. Otherwise ok (except for the flipping pinking which won't go away).
Garage did diagnostics and replaced a coil pack and lambda sensor. All ok for 48 hours...but now it's back.
Garage thinks it might be the cats but at a quoted £1200 (which sounds a rip off) I'm not keen to try unless I'm convinced that's the problem...which I'm not.
Never heard of this problem on the forum so would be happy to hear from someone who has experienced this.
Garage did diagnostics and replaced a coil pack and lambda sensor. All ok for 48 hours...but now it's back.
Garage thinks it might be the cats but at a quoted £1200 (which sounds a rip off) I'm not keen to try unless I'm convinced that's the problem...which I'm not.
Never heard of this problem on the forum so would be happy to hear from someone who has experienced this.
I'm on my second replacement set of coils and they've always been genuine BM parts. The garage was able to recover the cost of the coil under warranty.
The car hasn't been back to the garage (a BMW specialist) since the problem re-occurred but I'm not optimistic they will able to pin point the problem.
I've never heard of cat problems on the E46 so that is a real concern.
The car hasn't been back to the garage (a BMW specialist) since the problem re-occurred but I'm not optimistic they will able to pin point the problem.
I've never heard of cat problems on the E46 so that is a real concern.
Thankyou to all for your help.
Back from garage. Fault codes show 'Catalytic converter efficiency' for both banks 1 and 2. Fault codes reset but will no doubt reappear in a day or two.
Cost of two replacement cats c. £1,250 incl fitting. Yikes.
This doesn't seem like a common problem for E46s. Car is not used for short journeys and always run on good quality super unleaded.
I will have to speak to a cat specialist to see if either the cats can be cleaned or there is a lower cost replacement available.
Back from garage. Fault codes show 'Catalytic converter efficiency' for both banks 1 and 2. Fault codes reset but will no doubt reappear in a day or two.
Cost of two replacement cats c. £1,250 incl fitting. Yikes.
This doesn't seem like a common problem for E46s. Car is not used for short journeys and always run on good quality super unleaded.
I will have to speak to a cat specialist to see if either the cats can be cleaned or there is a lower cost replacement available.
The car is Now going really well since replacement of the dodgy coil.
Passed its MoT last month no problem so assume emissions ok.
Garage advises that further degradation of the cats will lead to progressive loss of performance - but this isn't evident at the moment.
Passed its MoT last month no problem so assume emissions ok.
Garage advises that further degradation of the cats will lead to progressive loss of performance - but this isn't evident at the moment.
Edited by Argybargy on Wednesday 29th October 23:23
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