Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: tigers_gonads on 14 February 2014, 12:06:39

Title: Lambda sensors
Post by: tigers_gonads on 14 February 2014, 12:06:39
Mine has one not switching and the others are pretty slow so I've got acquired 4 known good ones off Rob.

Question is .............. is it worth cleaning these up on a wire wheel or best to just fit them ?
A couple are pretty shitty  :-\
Title: Re: Lambda sensors
Post by: zirk on 14 February 2014, 12:10:48
Mine has one not switching and the others are pretty slow so I've got acquired 4 known good ones off Rob.

Question is .............. is it worth cleaning these up on a wire wheel or best to just fit them ?
A couple are pretty shitty  :-\

They should look dry and a kinda white powder'y coating on them I would just fit as is, if black or oil'y give them a clean.  :y
Title: Re: Lambda sensors
Post by: philhoward on 14 February 2014, 12:11:33
Go anywhere near them with a wire brush or wheel and you've just turned a delicate instrument into a doorstop.

At very best, a wash with some carb cleaner, from a distance.
Title: Re: Lambda sensors
Post by: Marks DTM Calib on 14 February 2014, 12:16:45
Two (mixture control ones, fixed pre-cat) should be switching at about one second intervals when hot, the other two (cat efficiency monitoring ones, fixed inbetween pre and main cat) shoudl not switch (unless the pre cat is goosed).
Title: Re: Lambda sensors
Post by: tigers_gonads on 14 February 2014, 12:38:05
Two (mixture control ones, fixed pre-cat) should be switching at about one second intervals when hot, the other two (cat efficiency monitoring ones, fixed inbetween pre and main cat) shoudl not switch (unless the pre cat is goosed).


I've got a pair of converted 3ltr cats from daz on it Mark.
He did warn me that they were slow.
I noticed that one of them (can't remember which one) was permanently lean.
Its pishing down at the moment, i'll plug in later and report back  :y

Thanks 
Title: Re: Lambda sensors
Post by: Kevin Wood on 14 February 2014, 15:28:38
I would not try to clean them with anything. Many chemicals can destroy them so carb cleaner is out. They will get hot enough in the exhaust that anything significant will get burnt off. Just fit them as they are. :y