Cat problems with Toyota MR2 (ZZW30)
Discussion
To avoid re-posting all of the details of this common problem I have, please allow me to link to the South African CarForums bulletin board website: http://www.carforums.co.za/viewtopic.php?f=3&t...
In there I detail what was first thought to be a pinging / timing problem, which later turned out to be either the pre-cats or main cat of the vehicle making a ticking noise, possibly indicating that either some or all 3 of the cats are failing.
I have registered and posted on several other Toyota MR2 forums as well, but hopefully getting some advice here would not do harm.
As I still have to open the cats and check for visual damage, at this point I would like to know what can be done about the 3rd O2 sensor that is after the main cat, in the case that all the cats are removed (this poses no legal issue regarding emission controls in South Africa). The MIL will light up if it detects that the hydrocarbons have not been converted as per proper cat functioning. How can I prevent this? How does a "lambde sensor fooler" work and where can they be obtained?
My plan is to either gut the cats or get rid of them completely by replacing the entire pipe from the manifold to the silencer with an ordinary downpipe.
Help appreciated from anyone who's had similar issues with this vehicle or who knows about decatting and O2 (lambda) sensors.
Thanks in advance.
In there I detail what was first thought to be a pinging / timing problem, which later turned out to be either the pre-cats or main cat of the vehicle making a ticking noise, possibly indicating that either some or all 3 of the cats are failing.
I have registered and posted on several other Toyota MR2 forums as well, but hopefully getting some advice here would not do harm.
As I still have to open the cats and check for visual damage, at this point I would like to know what can be done about the 3rd O2 sensor that is after the main cat, in the case that all the cats are removed (this poses no legal issue regarding emission controls in South Africa). The MIL will light up if it detects that the hydrocarbons have not been converted as per proper cat functioning. How can I prevent this? How does a "lambde sensor fooler" work and where can they be obtained?
My plan is to either gut the cats or get rid of them completely by replacing the entire pipe from the manifold to the silencer with an ordinary downpipe.
Help appreciated from anyone who's had similar issues with this vehicle or who knows about decatting and O2 (lambda) sensors.
Thanks in advance.
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