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Nov 8, 2024 | 12:34 PM

Ed1801

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Intermediate

Joined: Aug 2023

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C6 a6

Anyone know if I can use a cheap scanner to see the air to fuel ratio? And what to look at? I feel like my c6 is running lean

Nov 9, 2024 | 08:55 AM

C6ToGo

Safety Car

Joined: Dec 2006

Posts: 4,590

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From: Pearland / Houston Tx

A decent scan tool should show "fuel trims". Search that term on here for info. Like this

Nov 9, 2024 | 12:35 PM

Aardwolf

Race Director

Joined: Jun 2004

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From: WI

If it is lean the computer will set a code and check engine light on.

Nov 9, 2024 | 01:51 PM

C5 Diag

Moderator, Tech Contributor

Joined: Sep 2013

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From: Cape Coral, Florida

Quote:

Originally Posted by Ed1801

Anyone know if I can use a cheap scanner to see the air to fuel ratio? And what to look at? I feel like my c6 is running lean

You can use "Lambda" or fuel trims...with Lambda anything greater than 1.00 is lean and less than 1.00 is rich...anything over plus or minus 10% on long term fuel trims is a concern.

Nov 10, 2024 | 11:03 PM