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Old 02-01-2019, 02:17 PM   #1
brucewarring
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Default LS 2.0 Ltr Oxy sensors

Can anyone help please on the fuse chart it states fuse 32 HEGO 1 and 2 and fuse 33 HEGO 3and 4. Do I have 4 Oxy sensors , as I can only find I on the manual, also I think there is one after the cat, can anyone help with part numbers for the sensors please...thanks in advance Bruce
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Old 03-01-2019, 09:57 AM   #2
russellw
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Default Re: LS 2.0 Ltr Oxy sensors

There are 2 on the 1.8/2.0L models and 4 on the 2.5L V6 which is why the fuses are there.

You are correct in saying there is one up and one downstream of the CAT.

The Walker replacement part numbers are EGO-223 (pre-CAT) and EGO-507 (post CAT).

Bosch part numbers are OXY1217 (pre-CAT) and OXY2237 (post CAT.

Cheers
Russ
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Old 03-01-2019, 12:49 PM   #3
brucewarring
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Default Re: LS 2.0 Ltr Oxy sensors

Thanks for that Russ very helpful....have a great 2019....Bruce
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Old 02-02-2019, 02:03 PM   #4
DeKa
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Default Re: LS 2.0 Ltr Oxy sensors

I have part numbers for a 2009 LV with the 2.0 Duratec-HE engine. Drivetrain is the same but do check they’re correct for your car.

Upstream is 3M51-9F472-AC
Downstream is 3M51-9G444-AB
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Old 12-02-2019, 05:34 PM   #5
brucewarring
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Default Re: LS 2.0 Ltr Oxy sensors

Thank you DeKa the ones that Russell sent were great and the correct ones...thank you for your trouble...Bruce
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