Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: GastronomicKleptomaniac on 30 May 2022, 18:03:32

Title: Lambda sensors - different pre and post cat?
Post by: GastronomicKleptomaniac on 30 May 2022, 18:03:32

Going to fit new ones whilst I'm doing everything else... Are the lambdas different for pre and post-cat on the 3.2? They both appear to have four wires but there's two part numbers coming up?

Title: Re: Lambda sensors - different pre and post cat?
Post by: Migv6 le Frog Fan on 30 May 2022, 18:06:20

From memory, I think it may be just the length of the wiring that differs.

Title: Re: Lambda sensors - different pre and post cat?
Post by: GastronomicKleptomaniac on 30 May 2022, 18:18:50

Quote from: Migv6 le Frog Fan on 30 May 2022, 18:06:20

From memory, I think it may be just the length of the wiring that differs.

That would make sense. I'm looking at the universal Bosch replacements that I can wire in and make sure it's long enough but neat... :y

Title: Re: Lambda sensors - different pre and post cat?
Post by: Doctor Gollum on 30 May 2022, 18:53:06

Longer wire sensors are for auto iirc :y

Title: Re: Lambda sensors - different pre and post cat?
Post by: johnnydog on 30 May 2022, 21:08:49

The GM part nos for the two sensors are 2 x 9195606 , tag code AH (either auto or manual)  and 2 x 9199469 tag code BG (auto), or 2 x 9199470 tag code BE iirc (manual). You can cross ref these for the Bosch part nos.

Title: Re: Lambda sensors - different pre and post cat?
Post by: GastronomicKleptomaniac on 30 May 2022, 21:11:39

Ideal, thank you!