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Air filter

Help, Advice, Owners' Discussion and DIY Tutorials on S40 and V40. In this forum you'll find S40/V40-specific owners asking and answering questions on maintenance, ownership, repairs, tutorials and almost every do-it-yourself thing you can do to save money owning these Volvos.

1996 - 2004 S40
1996 - 2004 V40
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Juan234
Posts: 1
Joined: 18 February 2018
Year and Model: 2003 S40
Location: California

Air filter

Post by Juan234 »

I want to put a k&n cold air intake filter on my 03 s40 but I would have to not have my air sensor connected.(I know my check engine light will most likely be on). When I switch back to my stock air filter and connect the sensor will the check engine light turn automatically?
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