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Author Topic: Lambda sensors - different pre and post cat?  (Read 1379 times)

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GastronomicKleptomaniac

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Lambda sensors - different pre and post cat?
« 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?
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Migv6 le Frog Fan

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Re: Lambda sensors - different pre and post cat?
« Reply #1 on: 30 May 2022, 18:06:20 »
From memory, I think it may be just the length of the wiring that differs.
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GastronomicKleptomaniac

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Re: Lambda sensors - different pre and post cat?
« Reply #2 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
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Doctor Gollum

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Re: Lambda sensors - different pre and post cat?
« Reply #3 on: 30 May 2022, 18:53:06 »
Longer wire sensors are for auto iirc :y
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johnnydog

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Re: Lambda sensors - different pre and post cat?
« Reply #4 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.
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GastronomicKleptomaniac

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Re: Lambda sensors - different pre and post cat?
« Reply #5 on: 30 May 2022, 21:11:39 »
Ideal, thank you!
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